NERV Disaster Prevention is a weather app from Gehirn Inc.. All you need, in one app. It currently holds a 4.2-star rating on Google Play, based on 5,457 user reviews.
App Details
| Developer | Gehirn Inc. |
|---|---|
| Content Rating | Everyone |
| Installs | 1M+ |
| Rating | 4.2 / 5 (5,457 reviews) |
| Updated | May 25, 2026 |
Screenshots
About NERV Disaster Prevention
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
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
What makes NERV Disaster Prevention stand out
NERV Disaster Prevention has 1M+ installs to date. That puts it among the more widely adopted apps in its category. Scale at that level usually signals stable performance and a responsive development team. The 4.2-star aggregate is built on 5,457 real user reviews. That sits well above the average for the weather app genre. Scores like this appear when a product hits its core promise consistently.
NERV Disaster Prevention specifications and compatibility
The build on this page was last refreshed on May 25, 2026. Google Play classifies the content as Everyone.
Frequently asked questions
Is NERV Disaster Prevention free to download?
Yes, NERV Disaster Prevention is available as a free download on Google Play and as a free APK on this page. The APK is the official, unmodified build pulled directly from the developer.
How many people have downloaded NERV Disaster Prevention?
NERV Disaster Prevention has been downloaded 1M+ times from Google Play, putting it among the more widely adopted weather apps in its category.
Is the NERV Disaster Prevention APK safe to install?
Yes. The APK on this page is the original, unmodified build from Gehirn Inc., pulled directly from the Google Play Store with no third-party modifications. It carries the Everyone content rating Google assigns on Play.
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