About Japan Alerts
Japan Alerts delivers real-time earthquake, tsunami, volcano, typhoon, and all kinds of evacuation alerts from the Japan Meteorological Agency (JMA), translated into 12 languages. WHO IS THIS APP FOR? - Residents and...
Japan Alerts delivers real-time earthquake, tsunami, volcano, typhoon, and all kinds of evacuation alerts from the Japan Meteorological Agency (JMA), translated into 12 languages. WHO IS THIS APP FOR? - Residents and expats who need alerts in their own language - Travelers - add your destinations (up to 6 in Premium) and arrive prepared - Anyone with family or a loved one in Japan - Families who want a shared earthquake safety plan - Anyone fascinated by Japanese seismology and volcanology REAL-TIME ALERTS - Earthquake alerts with Shindo intensity and magnitude - S-wave countdown on emergency alerts: how many seconds before the shaking reaches you - Tsunami warnings with expected wave height and affected coastline - Municipality-level evacuation orders for every hazard - floods, landslides, storm surge and more - by warning level, in plain language - Volcanic eruption bulletins, typhoon tracking and severe-weather alerts 10 LANGUAGES Not just the app: alerts and place names are translated - nothing vital stays in Japanese only. Note: shelter names, addresses and place names are provided in English and/or romaji, not in the app language. Available in English, Japanese, French, Chinese, Korean, German, Spanish, Italian, Portuguese, and Russian. FREE - THE SAFETY ESSENTIALS - Alerts for moderate quakes (Shindo 4+) near you, and strong quakes (Shindo 6-) anywhere in Japan - 98,000+ official evacuation shelters with names and addresses in English/romaji, plus walking directions and offline access - Interactive map: epicenters, affected areas, and shelters (earthquake, tsunami, flood, fire) - A family safety group, "I'm safe" check-in, and a shared map - 100 years of seismic history in an animated time-lapse, plus statistics - Distinct, customizable alert sounds and a quiet night mode PREMIUM - GO DEEPER - Watch up to 7 places at once: your home plus 6 custom zones anywhere in Japan - Set your own Shindo threshold per zone - be alerted before it gets serious - Hazard maps across all 47 prefectures: flood, tsunami, landslide, liquefaction, volcanic and more (free: your home prefecture, one hazard type only) - No ads - Traveling to Osaka next month? Add it as a zone before you go. INTERACTIVE MAP & SHELTERS - Epicenters, affected areas, hazard layers and volcanoes at a glance - Filter shelters by type: earthquake, tsunami, flood, fire - Check in at a shelter and see real-time occupancy from other users STAY PREPARED - One-tap access to emergency services (110 police, 119 fire, 118 coast guard) - Post-quake analysis for M6+ events: your distance to the epicenter, S-wave travel time, energy released - Detailed preparedness guidance by hazard type ABOUT JMA The Japan Meteorological Agency operates over 4,000 seismic stations and monitors all 111 active volcanoes in Japan. This app uses JMA public data but is not affiliated with JMA or the Japanese government. It is not a substitute for J-Alert or any official warning system - in an emergency, always follow your local authorities. Free with ads. Premium unlocks custom watch zones, per-zone thresholds, and nationwide hazard maps, and removes all ads. Safety shouldn't be a luxury - Premium is priced to stay accessible to everyone. SUBSCRIPTION INFORMATION Japan Alerts offers an optional auto-renewable subscription. . Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. . Payment will be charged to your Apple ID account at confirmation of purchase. . Your account will be charged for renewal within 24 hours prior to the end of the current period. Privacy Policy: https://www.index64.com/japan-alerts/privacy-policy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Version History Version 3.0 brings many more of the Japan Meteorological Agency's alerts, and a map that shows what they announce. • With Premium, you now get new alerts for each of your places: river floods, rainbands, wind, snow, tornadoes, heatstroke, eruption flashes, ash fall and long-period shaking in tall buildings. • Premium also warns you when the Agency issues a megaquake advisory for the Nankai Trough or off Hokkaido and Sanriku. The Prepare tab explains what to do and whether your places are in the area. • A new weather map shows what an alert announces: rain radar, satellite, the typhoon's forecast track, thunderstorms, tornadoes and rainbands, for Premium subscribers. • When rain is heading for your home, Premium shows a card at the top of your alerts with the time it should arrive. • For everyone: earthquakes far from Japan now show where they struck, and every time follows your phone's time zone. Thank you for using Japan Alerts. Stay safe. 3.0 6h ago • More accurate detection of places outside Japan when setting the place you care about. The app now identifies these cases far more reliably and additionally helps you move your place to Japan. • Cleared alerts now leave your list. When the JMA lifts an evacuation or rain warning, the card disappears right away instead of lingering for days. • Japanese reviewed by a native speaker, across alert titles, push notifications and safety instructions. 2.5.1 Sep 28 Evacuation alerts now follow your municipality, and every Level 3 rain and flood alert reaches you. Your feed shows the evacuation alerts for your own city or ward rather than for the whole prefecture, so a home in central Tokyo sees the few alerts that concern it instead of dozens. Custom watch zones work the same way, each one matched to its own municipality, and push notifications are matched zone by zone, so two zones in the same prefecture with different thresholds behave exactly as you set them. When you move your Home to a new address, alerts follow the new municipality right away. Level 3 heavy rain and flood alerts now always appear in your feed, even on the busiest days, and each alert names only the zones it actually concerns. The entire Japanese interface has been reviewed by a native speaker, with clearer wording and a consistent tone on every screen. Thank you for using Japan Alerts. Stay safe. 2.5 Sep 24 Clearer explanations throughout the app, in every language. From the alert screens to the safety guides in the Prepare tab, Japan Alerts now says more precisely who should act and how: it points to the areas at risk (steep slopes, flood-prone ground, low-lying coast) and makes clear that its alerts are warnings from the Japan Meteorological Agency, while evacuation orders come from your city or ward. The same terms are now used on every screen, so each alert level reads the same way everywhere and in every language the app supports. Thank you for using Japan Alerts. Stay safe. 2.4.1 Sep 21 Minor technical and visual improvements for a better experience. Japan Alerts now starts more smoothly and more reliably, opening straight into your alert list even when the connection is poor. A few visual details have been polished along the way, and a handful of screens now read correctly in every language the app supports. Thank you for using Japan Alerts. Stay safe. 2.3.1 Sep 12 Twelve languages, and a map you can trust. Japan Alerts now speaks Vietnamese and Traditional Chinese. Alerts, place names and safety instructions, in twelve languages. Volcanoes are properly covered this time. Every volcano the Japan Meteorological Agency can name now has its place in the app, and a warning reaches you based on how far you actually are from the mountain, not only on which prefecture it stands in. The maps were quietly wrong, and now they are not. An epicenter out at sea is drawn out at sea. An event beyond the edge of the map shows an arrow pointing toward it, instead of a dot pretending to be somewhere it is not. Smaller things you may notice: a first bulletin now steps aside when the full report for the same quake arrives, family emergency mode reaches residents of designated cities, and the notification sounds screen is translated everywhere it was still English. Thank you for using Japan Alerts. Stay safe. 2.3 Sep 10 Your family, one tap away. The family group is the heart of Japan Alerts: the people you want to reach first when something happens, and the ones who want to know you are safe. This version makes that connection effortless from start to finish. Creating a group takes moments. Joining is the same simple step whether you tap the button or open a link someone sent you, and the app tells you exactly where you stand at every point. Your group stays with you: through a weak signal, through closing the app and coming back, and onto a new phone, where your place in the family is waiting for you. The people who matter most, ready before you need them. Thank you for using Japan Alerts. Stay safe. 2.2 Aug 10 The same watchful app, now steadier when it matters most. When a major earthquake strikes, everyone opens the app in the same moment. We reworked how alerts and the alert list are delivered so they stay fast and dependable during exactly that surge, when you most need to see what is happening and where. We also made the nearby-shelter map load more quickly and more reliably, so the places that can keep you safe are ready the instant you open it. The rest of this version is quieter work: improvements to stability and clarity across the app. The app you rely on, ready for the moments that matter most. Thank you for using Japan Alerts. Stay safe. 2.1 Jul 30 Same watchful app, now with more accurate alerts. You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all. The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly. We also revised several screens so they stay clear when you have given only a prefecture. Set your places once. We handle the rest. Thank you for using Japan Alerts. Stay safe. 2.0.7 Jul 20 Same watchful app, now lighter and faster. Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app. We also refined a few small interface details to make everyday use clearer. Set your places once. We handle the rest. Thank you for using Japan Alerts. Stay safe. 2.0.6 Jul 16 A small update, made with care. Japan Alerts is now leaner and more dependable. IMPROVED - Lower background data usage - Privacy and security improvements - Stability and reliability improvements throughout Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable. IMPROVED - Faster loading and lower data usage - More reliable offline access to your saved alerts and shelters - Stability and reliability improvements throughout Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish. - A faster, smoother experience throughout the app - A number of edge cases refined behind the scenes Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update: • Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance. • A clearer, more complete alerts list. Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map. We've also polished things behind the scenes for a smoother, more reliable experience. Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language. NEW - City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level - Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only - 100 years of seismic history in an animated time-lapse, with statistics - Tsunami alerts now show the expected wave height - 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language) IMPROVED - Distinct alert sounds and a quiet night mode — now free for everyone - Watch up to 7 places at once, each with its own Shindo threshold - Group setup made easier: QR codes and invitation links Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Previous Versions
Here you can find the changelog of Japan Alerts since it was posted on our website on 2026-07-09 11:43:27.
The latest version is 3.0 and it was updated on 2026-10-14 05:35:32. See below the changes in each version.
Japan Alerts version 3.0
Updated At: 2026-10-14
Changes: Version History Version 3.0 brings many more of the Japan Meteorological Agency's alerts, and a map that shows what they announce.
• With Premium, you now get new alerts for each of your places: river floods, rainbands, wind, snow, tornadoes, heatstroke, eruption flashes, ash fall and long-period shaking in tall buildings.
• Premium also warns you when the Agency issues a megaquake advisory for the Nankai Trough or off Hokkaido and Sanriku. The Prepare tab explains what to do and whether your places are in the area.
• A new weather map shows what an alert announces: rain radar, satellite, the typhoon's forecast track, thunderstorms, tornadoes and rainbands, for Premium subscribers.
• When rain is heading for your home, Premium shows a card at the top of your alerts with the time it should arrive.
• For everyone: earthquakes far from Japan now show where they struck, and every time follows your phone's time zone.
Thank you for using Japan Alerts. Stay safe. 3.0 6h ago • More accurate detection of places outside Japan when setting the place you care about. The app now identifies these cases far more reliably and additionally helps you move your place to Japan.
• Cleared alerts now leave your list. When the JMA lifts an evacuation or rain warning, the card disappears right away instead of lingering for days.
• Japanese reviewed by a native speaker, across alert titles, push notifications and safety instructions. 2.5.1 Sep 28 Evacuation alerts now follow your municipality, and every Level 3 rain and flood alert reaches you.
Your feed shows the evacuation alerts for your own city or ward rather than for the whole prefecture, so a home in central Tokyo sees the few alerts that concern it instead of dozens. Custom watch zones work the same way, each one matched to its own municipality, and push notifications are matched zone by zone, so two zones in the same prefecture with different thresholds behave exactly as you set them. When you move your Home to a new address, alerts follow the new municipality right away.
Level 3 heavy rain and flood alerts now always appear in your feed, even on the busiest days, and each alert names only the zones it actually concerns. The entire Japanese interface has been reviewed by a native speaker, with clearer wording and a consistent tone on every screen.
Thank you for using Japan Alerts. Stay safe. 2.5 Sep 24 Clearer explanations throughout the app, in every language.
From the alert screens to the safety guides in the Prepare tab, Japan Alerts now says more precisely who should act and how: it points to the areas at risk (steep slopes, flood-prone ground, low-lying coast) and makes clear that its alerts are warnings from the Japan Meteorological Agency, while evacuation orders come from your city or ward.
The same terms are now used on every screen, so each alert level reads the same way everywhere and in every language the app supports.
Thank you for using Japan Alerts. Stay safe. 2.4.1 Sep 21 Minor technical and visual improvements for a better experience.
Japan Alerts now starts more smoothly and more reliably, opening straight into your alert list even when the connection is poor.
A few visual details have been polished along the way, and a handful of screens now read correctly in every language the app supports.
Thank you for using Japan Alerts. Stay safe. 2.3.1 Sep 12 Twelve languages, and a map you can trust.
Japan Alerts now speaks Vietnamese and Traditional Chinese. Alerts, place names and safety instructions, in twelve languages.
Volcanoes are properly covered this time. Every volcano the Japan Meteorological Agency can name now has its place in the app, and a warning reaches you based on how far you actually are from the mountain, not only on which prefecture it stands in.
The maps were quietly wrong, and now they are not. An epicenter out at sea is drawn out at sea. An event beyond the edge of the map shows an arrow pointing toward it, instead of a dot pretending to be somewhere it is not.
Smaller things you may notice: a first bulletin now steps aside when the full report for the same quake arrives, family emergency mode reaches residents of designated cities, and the notification sounds screen is translated everywhere it was still English.
Thank you for using Japan Alerts. Stay safe. 2.3 Sep 10 Your family, one tap away.
The family group is the heart of Japan Alerts: the people you want to reach first when something happens, and the ones who want to know you are safe.
This version makes that connection effortless from start to finish. Creating a group takes moments. Joining is the same simple step whether you tap the button or open a link someone sent you, and the app tells you exactly where you stand at every point.
Your group stays with you: through a weak signal, through closing the app and coming back, and onto a new phone, where your place in the family is waiting for you.
The people who matter most, ready before you need them.
Thank you for using Japan Alerts. Stay safe. 2.2 Aug 10 The same watchful app, now steadier when it matters most.
When a major earthquake strikes, everyone opens the app in the same moment. We reworked how alerts and the alert list are delivered so they stay fast and dependable during exactly that surge, when you most need to see what is happening and where.
We also made the nearby-shelter map load more quickly and more reliably, so the places that can keep you safe are ready the instant you open it.
The rest of this version is quieter work: improvements to stability and clarity across the app.
The app you rely on, ready for the moments that matter most.
Thank you for using Japan Alerts. Stay safe. 2.1 Jul 30 Same watchful app, now with more accurate alerts.
You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all.
The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly.
We also revised several screens so they stay clear when you have given only a prefecture.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.7 Jul 20 Same watchful app, now lighter and faster.
Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app.
We also refined a few small interface details to make everyday use clearer.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.6 Jul 16 A small update, made with care. Japan Alerts is now leaner and more dependable.
IMPROVED
- Lower background data usage
- Privacy and security improvements
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable.
IMPROVED
- Faster loading and lower data usage
- More reliable offline access to your saved alerts and shelters
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish.
- A faster, smoother experience throughout the app
- A number of edge cases refined behind the scenes
Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Japan Alerts version 2.5.1
Updated At: 2026-10-06
Changes: Version History • More accurate detection of places outside Japan when setting the place you care about. The app now identifies these cases far more reliably and additionally helps you move your place to Japan.
• Cleared alerts now leave your list. When the JMA lifts an evacuation or rain warning, the card disappears right away instead of lingering for days.
• Japanese reviewed by a native speaker, across alert titles, push notifications and safety instructions. 2.5.1 Sep 28 Evacuation alerts now follow your municipality, and every Level 3 rain and flood alert reaches you.
Your feed shows the evacuation alerts for your own city or ward rather than for the whole prefecture, so a home in central Tokyo sees the few alerts that concern it instead of dozens. Custom watch zones work the same way, each one matched to its own municipality, and push notifications are matched zone by zone, so two zones in the same prefecture with different thresholds behave exactly as you set them. When you move your Home to a new address, alerts follow the new municipality right away.
Level 3 heavy rain and flood alerts now always appear in your feed, even on the busiest days, and each alert names only the zones it actually concerns. The entire Japanese interface has been reviewed by a native speaker, with clearer wording and a consistent tone on every screen.
Thank you for using Japan Alerts. Stay safe. 2.5 Sep 24 Clearer explanations throughout the app, in every language.
From the alert screens to the safety guides in the Prepare tab, Japan Alerts now says more precisely who should act and how: it points to the areas at risk (steep slopes, flood-prone ground, low-lying coast) and makes clear that its alerts are warnings from the Japan Meteorological Agency, while evacuation orders come from your city or ward.
The same terms are now used on every screen, so each alert level reads the same way everywhere and in every language the app supports.
Thank you for using Japan Alerts. Stay safe. 2.4.1 Sep 21 Minor technical and visual improvements for a better experience.
Japan Alerts now starts more smoothly and more reliably, opening straight into your alert list even when the connection is poor.
A few visual details have been polished along the way, and a handful of screens now read correctly in every language the app supports.
Thank you for using Japan Alerts. Stay safe. 2.3.1 Sep 12 Twelve languages, and a map you can trust.
Japan Alerts now speaks Vietnamese and Traditional Chinese. Alerts, place names and safety instructions, in twelve languages.
Volcanoes are properly covered this time. Every volcano the Japan Meteorological Agency can name now has its place in the app, and a warning reaches you based on how far you actually are from the mountain, not only on which prefecture it stands in.
The maps were quietly wrong, and now they are not. An epicenter out at sea is drawn out at sea. An event beyond the edge of the map shows an arrow pointing toward it, instead of a dot pretending to be somewhere it is not.
Smaller things you may notice: a first bulletin now steps aside when the full report for the same quake arrives, family emergency mode reaches residents of designated cities, and the notification sounds screen is translated everywhere it was still English.
Thank you for using Japan Alerts. Stay safe. 2.3 Sep 10 Your family, one tap away.
The family group is the heart of Japan Alerts: the people you want to reach first when something happens, and the ones who want to know you are safe.
This version makes that connection effortless from start to finish. Creating a group takes moments. Joining is the same simple step whether you tap the button or open a link someone sent you, and the app tells you exactly where you stand at every point.
Your group stays with you: through a weak signal, through closing the app and coming back, and onto a new phone, where your place in the family is waiting for you.
The people who matter most, ready before you need them.
Thank you for using Japan Alerts. Stay safe. 2.2 Aug 10 The same watchful app, now steadier when it matters most.
When a major earthquake strikes, everyone opens the app in the same moment. We reworked how alerts and the alert list are delivered so they stay fast and dependable during exactly that surge, when you most need to see what is happening and where.
We also made the nearby-shelter map load more quickly and more reliably, so the places that can keep you safe are ready the instant you open it.
The rest of this version is quieter work: improvements to stability and clarity across the app.
The app you rely on, ready for the moments that matter most.
Thank you for using Japan Alerts. Stay safe. 2.1 Jul 30 Same watchful app, now with more accurate alerts.
You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all.
The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly.
We also revised several screens so they stay clear when you have given only a prefecture.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.7 Jul 20 Same watchful app, now lighter and faster.
Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app.
We also refined a few small interface details to make everyday use clearer.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.6 Jul 16 A small update, made with care. Japan Alerts is now leaner and more dependable.
IMPROVED
- Lower background data usage
- Privacy and security improvements
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable.
IMPROVED
- Faster loading and lower data usage
- More reliable offline access to your saved alerts and shelters
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish.
- A faster, smoother experience throughout the app
- A number of edge cases refined behind the scenes
Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Japan Alerts version 2.5.1
Updated At: 2026-10-02
Changes: Version History • More accurate detection of places outside Japan when setting the place you care about. The app now identifies these cases far more reliably and additionally helps you move your place to Japan.
• Cleared alerts now leave your list. When the JMA lifts an evacuation or rain warning, the card disappears right away instead of lingering for days.
• Japanese reviewed by a native speaker, across alert titles, push notifications and safety instructions. 2.5.1 3d ago Evacuation alerts now follow your municipality, and every Level 3 rain and flood alert reaches you.
Your feed shows the evacuation alerts for your own city or ward rather than for the whole prefecture, so a home in central Tokyo sees the few alerts that concern it instead of dozens. Custom watch zones work the same way, each one matched to its own municipality, and push notifications are matched zone by zone, so two zones in the same prefecture with different thresholds behave exactly as you set them. When you move your Home to a new address, alerts follow the new municipality right away.
Level 3 heavy rain and flood alerts now always appear in your feed, even on the busiest days, and each alert names only the zones it actually concerns. The entire Japanese interface has been reviewed by a native speaker, with clearer wording and a consistent tone on every screen.
Thank you for using Japan Alerts. Stay safe. 2.5 Sep 24 Clearer explanations throughout the app, in every language.
From the alert screens to the safety guides in the Prepare tab, Japan Alerts now says more precisely who should act and how: it points to the areas at risk (steep slopes, flood-prone ground, low-lying coast) and makes clear that its alerts are warnings from the Japan Meteorological Agency, while evacuation orders come from your city or ward.
The same terms are now used on every screen, so each alert level reads the same way everywhere and in every language the app supports.
Thank you for using Japan Alerts. Stay safe. 2.4.1 Sep 21 Minor technical and visual improvements for a better experience.
Japan Alerts now starts more smoothly and more reliably, opening straight into your alert list even when the connection is poor.
A few visual details have been polished along the way, and a handful of screens now read correctly in every language the app supports.
Thank you for using Japan Alerts. Stay safe. 2.3.1 Sep 12 Twelve languages, and a map you can trust.
Japan Alerts now speaks Vietnamese and Traditional Chinese. Alerts, place names and safety instructions, in twelve languages.
Volcanoes are properly covered this time. Every volcano the Japan Meteorological Agency can name now has its place in the app, and a warning reaches you based on how far you actually are from the mountain, not only on which prefecture it stands in.
The maps were quietly wrong, and now they are not. An epicenter out at sea is drawn out at sea. An event beyond the edge of the map shows an arrow pointing toward it, instead of a dot pretending to be somewhere it is not.
Smaller things you may notice: a first bulletin now steps aside when the full report for the same quake arrives, family emergency mode reaches residents of designated cities, and the notification sounds screen is translated everywhere it was still English.
Thank you for using Japan Alerts. Stay safe. 2.3 Sep 10 Your family, one tap away.
The family group is the heart of Japan Alerts: the people you want to reach first when something happens, and the ones who want to know you are safe.
This version makes that connection effortless from start to finish. Creating a group takes moments. Joining is the same simple step whether you tap the button or open a link someone sent you, and the app tells you exactly where you stand at every point.
Your group stays with you: through a weak signal, through closing the app and coming back, and onto a new phone, where your place in the family is waiting for you.
The people who matter most, ready before you need them.
Thank you for using Japan Alerts. Stay safe. 2.2 Aug 10 The same watchful app, now steadier when it matters most.
When a major earthquake strikes, everyone opens the app in the same moment. We reworked how alerts and the alert list are delivered so they stay fast and dependable during exactly that surge, when you most need to see what is happening and where.
We also made the nearby-shelter map load more quickly and more reliably, so the places that can keep you safe are ready the instant you open it.
The rest of this version is quieter work: improvements to stability and clarity across the app.
The app you rely on, ready for the moments that matter most.
Thank you for using Japan Alerts. Stay safe. 2.1 Jul 30 Same watchful app, now with more accurate alerts.
You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all.
The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly.
We also revised several screens so they stay clear when you have given only a prefecture.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.7 Jul 20 Same watchful app, now lighter and faster.
Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app.
We also refined a few small interface details to make everyday use clearer.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.6 Jul 16 A small update, made with care. Japan Alerts is now leaner and more dependable.
IMPROVED
- Lower background data usage
- Privacy and security improvements
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable.
IMPROVED
- Faster loading and lower data usage
- More reliable offline access to your saved alerts and shelters
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish.
- A faster, smoother experience throughout the app
- A number of edge cases refined behind the scenes
Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Japan Alerts version 2.5
Updated At: 2026-09-25
Changes: Version History Evacuation alerts now follow your municipality, and every Level 3 rain and flood alert reaches you.
Your feed shows the evacuation alerts for your own city or ward rather than for the whole prefecture, so a home in central Tokyo sees the few alerts that concern it instead of dozens. Custom watch zones work the same way, each one matched to its own municipality, and push notifications are matched zone by zone, so two zones in the same prefecture with different thresholds behave exactly as you set them. When you move your Home to a new address, alerts follow the new municipality right away.
Level 3 heavy rain and flood alerts now always appear in your feed, even on the busiest days, and each alert names only the zones it actually concerns. The entire Japanese interface has been reviewed by a native speaker, with clearer wording and a consistent tone on every screen.
Thank you for using Japan Alerts. Stay safe. 2.5 18h ago Clearer explanations throughout the app, in every language.
From the alert screens to the safety guides in the Prepare tab, Japan Alerts now says more precisely who should act and how: it points to the areas at risk (steep slopes, flood-prone ground, low-lying coast) and makes clear that its alerts are warnings from the Japan Meteorological Agency, while evacuation orders come from your city or ward.
The same terms are now used on every screen, so each alert level reads the same way everywhere and in every language the app supports.
Thank you for using Japan Alerts. Stay safe. 2.4.1 3d ago Minor technical and visual improvements for a better experience.
Japan Alerts now starts more smoothly and more reliably, opening straight into your alert list even when the connection is poor.
A few visual details have been polished along the way, and a handful of screens now read correctly in every language the app supports.
Thank you for using Japan Alerts. Stay safe. 2.3.1 Sep 12 Twelve languages, and a map you can trust.
Japan Alerts now speaks Vietnamese and Traditional Chinese. Alerts, place names and safety instructions, in twelve languages.
Volcanoes are properly covered this time. Every volcano the Japan Meteorological Agency can name now has its place in the app, and a warning reaches you based on how far you actually are from the mountain, not only on which prefecture it stands in.
The maps were quietly wrong, and now they are not. An epicenter out at sea is drawn out at sea. An event beyond the edge of the map shows an arrow pointing toward it, instead of a dot pretending to be somewhere it is not.
Smaller things you may notice: a first bulletin now steps aside when the full report for the same quake arrives, family emergency mode reaches residents of designated cities, and the notification sounds screen is translated everywhere it was still English.
Thank you for using Japan Alerts. Stay safe. 2.3 Sep 10 Your family, one tap away.
The family group is the heart of Japan Alerts: the people you want to reach first when something happens, and the ones who want to know you are safe.
This version makes that connection effortless from start to finish. Creating a group takes moments. Joining is the same simple step whether you tap the button or open a link someone sent you, and the app tells you exactly where you stand at every point.
Your group stays with you: through a weak signal, through closing the app and coming back, and onto a new phone, where your place in the family is waiting for you.
The people who matter most, ready before you need them.
Thank you for using Japan Alerts. Stay safe. 2.2 Aug 10 The same watchful app, now steadier when it matters most.
When a major earthquake strikes, everyone opens the app in the same moment. We reworked how alerts and the alert list are delivered so they stay fast and dependable during exactly that surge, when you most need to see what is happening and where.
We also made the nearby-shelter map load more quickly and more reliably, so the places that can keep you safe are ready the instant you open it.
The rest of this version is quieter work: improvements to stability and clarity across the app.
The app you rely on, ready for the moments that matter most.
Thank you for using Japan Alerts. Stay safe. 2.1 Jul 30 Same watchful app, now with more accurate alerts.
You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all.
The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly.
We also revised several screens so they stay clear when you have given only a prefecture.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.7 Jul 20 Same watchful app, now lighter and faster.
Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app.
We also refined a few small interface details to make everyday use clearer.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.6 Jul 16 A small update, made with care. Japan Alerts is now leaner and more dependable.
IMPROVED
- Lower background data usage
- Privacy and security improvements
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable.
IMPROVED
- Faster loading and lower data usage
- More reliable offline access to your saved alerts and shelters
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish.
- A faster, smoother experience throughout the app
- A number of edge cases refined behind the scenes
Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Japan Alerts version 2.3.1
Updated At: 2026-09-18
Changes: Version History Minor technical and visual improvements for a better experience.
Japan Alerts now starts more smoothly and more reliably, opening straight into your alert list even when the connection is poor.
A few visual details have been polished along the way, and a handful of screens now read correctly in every language the app supports.
Thank you for using Japan Alerts. Stay safe. 2.3.1 5d ago Twelve languages, and a map you can trust.
Japan Alerts now speaks Vietnamese and Traditional Chinese. Alerts, place names and safety instructions, in twelve languages.
Volcanoes are properly covered this time. Every volcano the Japan Meteorological Agency can name now has its place in the app, and a warning reaches you based on how far you actually are from the mountain, not only on which prefecture it stands in.
The maps were quietly wrong, and now they are not. An epicenter out at sea is drawn out at sea. An event beyond the edge of the map shows an arrow pointing toward it, instead of a dot pretending to be somewhere it is not.
Smaller things you may notice: a first bulletin now steps aside when the full report for the same quake arrives, family emergency mode reaches residents of designated cities, and the notification sounds screen is translated everywhere it was still English.
Thank you for using Japan Alerts. Stay safe. 2.3 Sep 10 Your family, one tap away.
The family group is the heart of Japan Alerts: the people you want to reach first when something happens, and the ones who want to know you are safe.
This version makes that connection effortless from start to finish. Creating a group takes moments. Joining is the same simple step whether you tap the button or open a link someone sent you, and the app tells you exactly where you stand at every point.
Your group stays with you: through a weak signal, through closing the app and coming back, and onto a new phone, where your place in the family is waiting for you.
The people who matter most, ready before you need them.
Thank you for using Japan Alerts. Stay safe. 2.2 Aug 10 The same watchful app, now steadier when it matters most.
When a major earthquake strikes, everyone opens the app in the same moment. We reworked how alerts and the alert list are delivered so they stay fast and dependable during exactly that surge, when you most need to see what is happening and where.
We also made the nearby-shelter map load more quickly and more reliably, so the places that can keep you safe are ready the instant you open it.
The rest of this version is quieter work: improvements to stability and clarity across the app.
The app you rely on, ready for the moments that matter most.
Thank you for using Japan Alerts. Stay safe. 2.1 Jul 30 Same watchful app, now with more accurate alerts.
You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all.
The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly.
We also revised several screens so they stay clear when you have given only a prefecture.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.7 Jul 20 Same watchful app, now lighter and faster.
Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app.
We also refined a few small interface details to make everyday use clearer.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.6 Jul 16 A small update, made with care. Japan Alerts is now leaner and more dependable.
IMPROVED
- Lower background data usage
- Privacy and security improvements
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable.
IMPROVED
- Faster loading and lower data usage
- More reliable offline access to your saved alerts and shelters
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish.
- A faster, smoother experience throughout the app
- A number of edge cases refined behind the scenes
Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Japan Alerts version 2.3
Updated At: 2026-09-11
Changes: Version History Twelve languages, and a map you can trust.
Japan Alerts now speaks Vietnamese and Traditional Chinese. Alerts, place names and safety instructions, in twelve languages.
Volcanoes are properly covered this time. Every volcano the Japan Meteorological Agency can name now has its place in the app, and a warning reaches you based on how far you actually are from the mountain, not only on which prefecture it stands in.
The maps were quietly wrong, and now they are not. An epicenter out at sea is drawn out at sea. An event beyond the edge of the map shows an arrow pointing toward it, instead of a dot pretending to be somewhere it is not.
Smaller things you may notice: a first bulletin now steps aside when the full report for the same quake arrives, family emergency mode reaches residents of designated cities, and the notification sounds screen is translated everywhere it was still English.
Thank you for using Japan Alerts. Stay safe. 2.3 1d ago Your family, one tap away.
The family group is the heart of Japan Alerts: the people you want to reach first when something happens, and the ones who want to know you are safe.
This version makes that connection effortless from start to finish. Creating a group takes moments. Joining is the same simple step whether you tap the button or open a link someone sent you, and the app tells you exactly where you stand at every point.
Your group stays with you: through a weak signal, through closing the app and coming back, and onto a new phone, where your place in the family is waiting for you.
The people who matter most, ready before you need them.
Thank you for using Japan Alerts. Stay safe. 2.2 Aug 10 The same watchful app, now steadier when it matters most.
When a major earthquake strikes, everyone opens the app in the same moment. We reworked how alerts and the alert list are delivered so they stay fast and dependable during exactly that surge, when you most need to see what is happening and where.
We also made the nearby-shelter map load more quickly and more reliably, so the places that can keep you safe are ready the instant you open it.
The rest of this version is quieter work: improvements to stability and clarity across the app.
The app you rely on, ready for the moments that matter most.
Thank you for using Japan Alerts. Stay safe. 2.1 Jul 30 Same watchful app, now with more accurate alerts.
You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all.
The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly.
We also revised several screens so they stay clear when you have given only a prefecture.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.7 Jul 20 Same watchful app, now lighter and faster.
Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app.
We also refined a few small interface details to make everyday use clearer.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.6 Jul 16 A small update, made with care. Japan Alerts is now leaner and more dependable.
IMPROVED
- Lower background data usage
- Privacy and security improvements
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable.
IMPROVED
- Faster loading and lower data usage
- More reliable offline access to your saved alerts and shelters
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish.
- A faster, smoother experience throughout the app
- A number of edge cases refined behind the scenes
Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Japan Alerts version 2.2
Updated At: 2026-09-04
Changes: Version History Your family, one tap away.
The family group is the heart of Japan Alerts: the people you want to reach first when something happens, and the ones who want to know you are safe.
This version makes that connection effortless from start to finish. Creating a group takes moments. Joining is the same simple step whether you tap the button or open a link someone sent you, and the app tells you exactly where you stand at every point.
Your group stays with you: through a weak signal, through closing the app and coming back, and onto a new phone, where your place in the family is waiting for you.
The people who matter most, ready before you need them.
Thank you for using Japan Alerts. Stay safe. 2.2 Aug 10 The same watchful app, now steadier when it matters most.
When a major earthquake strikes, everyone opens the app in the same moment. We reworked how alerts and the alert list are delivered so they stay fast and dependable during exactly that surge, when you most need to see what is happening and where.
We also made the nearby-shelter map load more quickly and more reliably, so the places that can keep you safe are ready the instant you open it.
The rest of this version is quieter work: improvements to stability and clarity across the app.
The app you rely on, ready for the moments that matter most.
Thank you for using Japan Alerts. Stay safe. 2.1 Jul 30 Same watchful app, now with more accurate alerts.
You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all.
The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly.
We also revised several screens so they stay clear when you have given only a prefecture.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.7 Jul 20 Same watchful app, now lighter and faster.
Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app.
We also refined a few small interface details to make everyday use clearer.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.6 Jul 16 A small update, made with care. Japan Alerts is now leaner and more dependable.
IMPROVED
- Lower background data usage
- Privacy and security improvements
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable.
IMPROVED
- Faster loading and lower data usage
- More reliable offline access to your saved alerts and shelters
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish.
- A faster, smoother experience throughout the app
- A number of edge cases refined behind the scenes
Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Japan Alerts version 2.0.7
Updated At: 2026-07-30
Changes: Version History Same watchful app, now with more accurate alerts.
You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all.
The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly.
We also revised several screens so they stay clear when you have given only a prefecture.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.7 Jul 20 Same watchful app, now lighter and faster.
Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app.
We also refined a few small interface details to make everyday use clearer.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.6 Jul 16 A small update, made with care. Japan Alerts is now leaner and more dependable.
IMPROVED
- Lower background data usage
- Privacy and security improvements
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable.
IMPROVED
- Faster loading and lower data usage
- More reliable offline access to your saved alerts and shelters
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish.
- A faster, smoother experience throughout the app
- A number of edge cases refined behind the scenes
Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Japan Alerts version 2.0.7
Updated At: 2026-07-22
Changes: Version History Same watchful app, now with more accurate alerts.
You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all.
The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly.
We also revised several screens so they stay clear when you have given only a prefecture.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.7 1d ago Same watchful app, now lighter and faster.
Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app.
We also refined a few small interface details to make everyday use clearer.
Set your places once. We handle the rest.
Thank you for using Japan Alerts. Stay safe. 2.0.6 5d ago A small update, made with care. Japan Alerts is now leaner and more dependable.
IMPROVED
- Lower background data usage
- Privacy and security improvements
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.5 Jul 13 A little update with a big polish. Japan Alerts is now faster and more dependable.
IMPROVED
- Faster loading and lower data usage
- More reliable offline access to your saved alerts and shelters
- Stability and reliability improvements throughout
Thank you for using Japan Alerts. Stay safe, and tell us what to build next. 2.0.4 Jul 9 This update focuses on performance and polish.
- A faster, smoother experience throughout the app
- A number of edge cases refined behind the scenes
Thank you for using Japan Alerts. 2.0.3 Jul 4 In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 Jun 27 Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 Jun 26 A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 Jun 24 Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
Japan Alerts version 2.0.2
Updated At: 2026-06-30
Changes: Version History In this update:
• Evacuation alerts now show the affected town right in your list, so you can see where they apply at a glance.
• A clearer, more complete alerts list.
Thanks for using Japan Alerts. 2.0.2 2d ago Evacuation alerts are now clearer: see the hazard type at a glance, understand each alert's level (3, 4 or 5), and spot the affected area on the map.
We've also polished things behind the scenes for a smoother, more reliable experience.
Thank you for using Japan Alerts! 2.0.1 3d ago A major update for staying safe in Japan, in your language.
NEW
- City-level evacuation orders for every hazard: floods, landslides, storm surge and more, by warning level
- Hazard maps (flood, tsunami, landslide, liquefaction, volcanic) — all 47 prefectures and all hazards in Premium; in free, your home prefecture and one hazard type only
- 100 years of seismic history in an animated time-lapse, with statistics
- Tsunami alerts now show the expected wave height
- 98,000+ evacuation shelters — names and addresses are in English (not translated into the app language)
IMPROVED
- Distinct alert sounds and a quiet night mode — now free for everyone
- Watch up to 7 places at once, each with its own Shindo threshold
- Group setup made easier: QR codes and invitation links
Thank you for using Japan Alerts. Stay safe — and tell us what to build next. 2.0 5d ago Added translation of geographic locations, changed the application icon, and various minor fixes 1.3 Apr 23 Minor UI fixes 1.2 Apr 3 Critical Alerts — Emergency notifications for major earthquakes, tsunamis, and volcanic eruptions can now sound even when Do Not Disturb or Silent mode is enabled. This feature applies only to the most severe events. 1.1 Mar 15 1.0 Mar 12
