NERV Disaster Prevention
Gehirn Inc.
- Compliance
- Law-aligned
- Category
- Weather
- Download
- 1M+
- Safety
- 100% Safe
- Price
- Free
- Developer
- Gehirn Inc.
Screenshots
About this app
The NERV Disaster Prevention App is a smartphone service that delivers earthquake, tsunami, volcanic eruption and emergency warnings, as well as provides weather-related disaster prevention information for flooding and landslides, optimised based on the user's current and registered locations. The app was developed to help people living in or visiting an area where damage is expected to occur, to accurately assess the situation and make quick decisions and actions. With information received directly through a leased line connected to the Japan Meteorological Agency, our proprietary technology enables the fastest information distribution in Japan. ▼ All the information you need, in one app Get a wide range of disaster prevention information, including weather and typhoon forecasts, rain radar, earthquake, tsunami and volcanic eruption alerts, emergency weather warnings and landslide information, river information, and heavy rain risk notifications. By interacting with the map on the screen, you can zoom in on your location or pan across the country and see the cloud cover, typhoon forecast areas, tsunami warning areas, or the scale and intensity of an earthquake. ① Providing users with the most appropriate disaster information The home screen displays the information you need at the time and place you need it. When there’s an earthquake, the home screen will show you the latest information. If another type of warning or alert is issued while the earthquake is active, the app will sort them depending on the type, elapsed time and urgency, so you’ll always have the most important information at your fingertips. ② Push Notifications for Important Information We send out different types of notifications depending on the device’s location, the type of information and level of urgency. If the information is not urgent, we send a silent notification as not to disturb the user. For more urgent situations where a disaster is time-sensitive, a ‘Critical Alert’ alerts the user to an imminent danger. Notifications like Earthquake Early Warnings (Alert level) and Tsunami Warnings will be forced to sound, even if the device is in Silent or Do Not Disturb modes. Note: Critical Alerts will only be sent to users in the target area of the most urgent types of disasters. Users who have registered their location but are not in the target area will instead receive a normal notification. ※ In order to receive Critical Alerts, you need to set your location permissions to “Always Allow” and have Background App Refresh turned on. If you don’t want Critical Alerts, you can disable them from Settings. ③ Barrier-Free Design We paid close attention when designing the app to ensure our information is accessible to everyone. We put a focus on accessibility, with colour schemes that are easy to distinguish for people with colour blindness, and use a font with large, clear letters so long bodies of text are easy to read. ▼ Supporters’ Club (In-App Purchase) In order to keep doing what we do, we’re looking for supporters to help us cover the development and operational costs of the app. The Supporters’ Club is a voluntary membership scheme for those who want to give back to the NERV Disaster Prevention app, by contributing to its development with a monthly fee. You can find out more information about the Supporters’ Club on our website. https://nerv.app/en/supporters.html [Privacy] Gehirn Inc. is an information security company. The security and privacy of our users is our highest priority. We take great care not to collect excessive amounts of information about our users through this application. Your exact location is never known to us; all location information is first converted to an area code used by everyone in that area (like a zip code). The server also doesn’t store past area codes, so your movements cannot be tracked. Learn more about your privacy on our website. https://nerv.app/en/support.html#privacy
Check the forecast
NERV Disaster Prevention shows current conditions and the days ahead.
Plan around it
Hourly and daily views help you plan.
Save locations
Follow the places that matter to you.
Advantages
- Conditions update through the day.
- Multiple locations stay a tap away.
- Views cover both the short and longer term.
What users say
Maria Hernandez
May 11, 2026
This has to be one of the worst earthquake apps that has to be on here, because why am I getting a notification of an earthquake 4 minutes after the earthquake. The whole point of these apps is so that you're aware before the earthquake.
Ka Rin
Jan 2, 2024
Could you please enable to change notifications based on earthquake strength? It's frightening to have a sound notice for an unimportant event such as strength 3. I'd prefer to set to lower 5 (like yahoo allows), so I know it's potentially serious without checking my phone first. Will have to disable sounds on this until the feature comes or otherwise I'd be constantly scared
Owen In Japan
Oct 14, 2025
Frankly difficult to think of how it could be much better, everything you want a weather app to be, no fuss, no advertisements, minute-by-minute information. A blessing for just checking the radar, a necessity for staying informed during natural disasters. No wonder Tokyo-3 lasted so long when under constant Angel Attack
Eric Norman
Nov 5, 2025
Highly in-depth disaster information AND it's Evangelion themed. One of the most invaluable apps on my phone. My only suggestion is I live in a part of Japan that has a lot of bears, so information about local bear sightings would be incredibly useful.
Holly Priestman
Oct 13, 2025
The latest network update has broken the networking and now it keeps saying "error retrieving data" on the "home" tab of the "National" location and my named city location... disappointing for such a good app! Will rerate when fixed :) <3
Get this app
You'll be redirected to the official store. HelloApps doesn't host any downloads.
Similar apps
AccuWeather: Weather Radar
Weather
Download AccuWeather®, The Most Trusted Weather App.
The Weather Channel - Radar
Weather
The Weather Channel is the World's Most Accurate Forecaster*.
TheWeather: weather forecast
Weather
Choose the authority of Italy's most consulted weather app.
MyRadar Weather Radar
Weather
MyRadar is a fast, easy-to-use, yet powerful weather app that displays animated weather radar around your current location, allowing you to quickly see what weather is coming your way.
WeatherBug: Weather Forecast
Weather
Get reliable weather forecasts with WeatherBug!
Yahoo Weather: Forecast & Maps
Weather
Prepare for summer with Yahoo Weather, the app that combines accurate forecasts with photos that match your current conditions.
Yahoo!天気 - 雨雲や台風の接近がわかる天気予報アプリ
Weather
Seven Reasons to Choose Yahoo!
防災速報 - 地震、津波、豪雨など、災害情報をいち早くお届け
Weather
○ A free disaster prevention app that notifies your current location and up to three designated locations within Japan.
Emergency: Severe Weather App
Weather
American Red Cross Emergency App Prepare to protect yourself and your loved ones with expert tips, real-time alerts and easy-to-use tools.
Fishing Calendar & Tide Times
Weather
Fishing Calendar & Tide Times is the all-in-one fishing app that tells you exactly when and where to fish.
Windfinder Pro: Wind & Weather
Weather
Wind, weather, waves and tides anywhere in the world for kitesurfers, windsurfers, surfers, sailors, and paragliders.
Radar Alive Pro Weather Radar
Weather
Radar Alive!