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  • Japan Alerts screenshot 1
  • Japan Alerts screenshot 2
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  • Japan Alerts screenshot 4

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 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/

Ratings & reviews

4.3

15 ratings

5 ★ 73% 4 ★ 7% 3 ★ 7% 2 ★ 0% 1 ★ 13%

What’s new

Version 2.5 · Updated September 24, 2026

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.

App privacy

The developer, Itchigoo, reported these privacy practices to Apple.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers: Device ID

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Identifiers: Device ID
  • Location: Coarse Location
  • Usage Data: Product Interaction

Used for: Third-Party Advertising, App Functionality

Alternatives to Japan Alerts

Looking for apps like Japan Alerts? Here are 6 similar apps on the App Store. The highest rated is ゆれくるコール (4.8/5), and all 6 are free to download.

Japan Alerts vs. alternatives
App Rating Price Last updated
Japan Alerts 4.3 / 5 (15 ratings) Free September 24, 2026
Japan Official WeatherForecast – Free May 31, 2025
Safety tips 2.1 / 5 (18) Free Sep 1, 2026
JapanQuakes – Free Sep 29, 2025
WeatherJapan 3.0 / 5 (2) Free Dec 21, 2025
ゆれくるコール 4.8 / 5 (13) Free Mar 17, 2025
PREP(プレップ) - 総合防災アプリ 2.3 / 5 (6) Free Sep 11, 2026