Japan Alerts
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| Rating | |||
|---|---|---|---|
| Japan | 24%28 | 4.14 | |
| United States | 12%14 | 4.36 | |
| Spain | 8%9 | 5.00 | |
| Singapore | 7%8 | 4.38 | |
| South Korea | 6%7 | 4.71 | |
| Australia | 5%6 | 3.67 | |
| Hong Kong | 5%6 | 4.50 | |
| Brazil | 4%5 | 5.00 | |
| Switzerland | 3%4 | 5.00 | |
| China | 3%4 | 5.00 | |
| United Kingdom | 3%4 | 4.25 | |
| France | 3%3 | 5.00 | |
| Italy | 3%3 | 5.00 | |
| Canada | 2%2 | 5.00 | |
| Germany | 2%2 | 5.00 | |
| Sweden | 2%2 | 4.50 | |
| Thailand | 2%2 | 3.50 |
Description
Japan Alerts delivers real-time earthquake, tsunami, volcano, typhoon, and all kinds of evacuation alerts from the Japan Meteorological Agency (JMA), translated into 10 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/