NERV Disaster Prevention

NERV Disaster Prevention

All you need, in one app

47 ratings
53 reviews
#41 in free Weather
📡 News
☀️ Weather
Free
In-App Purchases

Details

  • Released
  • Updated
  • August 31, 2021
  • September 17, 2026

Features

Background Location Access

NERV Disaster Prevention screenshot #1 for iPhone
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NERV Disaster Prevention screenshot #7 for iPhone
NERV Disaster Prevention screenshot #8 for iPhone
NERV Disaster Prevention screenshot #9 for iPhone
NERV Disaster Prevention screenshot #10 for iPhone
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About

This app provides critical disaster warnings for earthquakes, tsunamis, volcanic eruptions, and weather-related events like floods and landslides. It offers real-time information optimized for your current and registered locations, helping you make informed decisions during emergencies.

Earthquake, tsunami, volcanic eruption warnings
Weather-related disaster prevention info
Location-optimized alerts
Real-time map interaction
Urgency-based notification sorting
Critical Alerts for imminent danger
Barrier-free design
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+1

What's New in NERV Disaster Prevention

7.1.0

September 17, 2026

- Weather Flash Reports and Weather Information now display a map tailored to the type of information being reported - Weather Flash Reports and Weather Information can now be delivered as push notifications (Weather Information notifications can be disabled in Menu > Notifications) - The “Synoptic Chart” layer that was previously offered through Early Access is now available to everyone! Our thoughts are with everyone affected by the heavy rain disasters occurring across Japan. We hope you’ll be able to get back on your feet, in both body and mind, as soon as possible. ◆ Development Team Update On August 30, the development team participated in the Miyagi Prefecture Comprehensive Disaster Prevention Drill together with the NERV Disaster Response Vehicle. It unfortunately rained that day, but many people still came out to see us, with visitors stopping by to tell us “I use the app!” and “I saw you on X, so I came to visit!” Some even joined the Supporters’ Club on the spot, reminding us once again just how much support we receive from all of you. With the recent days of heavy rain, Emergency Warnings have been issued frequently late at night, and our team has had many sleepless days working around the clock. This update improves how we handle Weather Information reports, linear rainband information, Record-Breaking Short-Period Heavy Rainfall information, and others. We hope this makes the app more useful the next time heavy rain comes around.

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Subscription plans

E Plan

Supporters' Club

$2.491 Month
How to cancel NERV Disaster Prevention subscription ⁉️

Charts

Top Free

📉 41-1

Weather

This app dropped -1 position in Weather chart.

Last updated on September 21, 2026.

User reviews

Must use!

Used this app while visiting Japan. We were there during heavy Typhoons. This app notified me of all information I needed to know and also warned us of areas that were flooding! Highly recommend this app!!

Excellent weather & disaster information

The NERV app is the best I've found in Japan for alerts and information about dangerous weather, earthquakes, and disasters. It's a must-have app for residents of Japan, including Japanese nationals, but especially for English speakers!

Awesome app!

While I was staying in Japan, the app woke us up at 2 am and warned us of an earthquake. I was able to get out of my hotel room and safely exit outside. If not for this app, I think I might of slept through the emergency service warning. It also told me if there were any tsunami warnings after.

For reference: the earthquake was a 5.9 and hit Urayasu
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Awesomesauce

Dude it’s NERV

Fast, helpful, tasteful, good UI

I recently moved to Japan. This app notifies me ahead of any other app I have. And the user interface is simple to use, allowing me to add various regions I want to receive notifications for.
I clicked on the banner notification of an earthquake today and was instantly shown the anticipated strength and a map showing a live estimate of the anticipated shock that I could watch reach my area. This let me know it should be a relatively mild experience, but if it was going to be anything more serious I would need to leave the building.
Fortunately it was a relatively small occurrence today, but I greatly appreciate that I didn’t have to click through any menus for all of the important information in the moment.
Thank you so much for your efforts with this app to give us such instant information.
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FAQ

What types of disaster alerts does NERV provide?

NERV provides alerts for earthquakes, tsunamis, volcanic eruptions, and weather-related disasters such as flooding and landslides. It also includes weather and typhoon forecasts, rain radar, and heavy rain risk notifications.

How does NERV ensure fast information distribution?

The app receives information directly through a leased line connected to the Japan Meteorological Agency. This proprietary technology enables the fastest information distribution in Japan, ensuring users get critical updates quickly.

Can NERV send alerts even if my phone is on silent?

Yes, for urgent situations like Earthquake Early Warnings and Tsunami Warnings, NERV can send 'Critical Alerts' that will sound even if your device is in Silent or Do Not Disturb modes. This requires location permissions to be set to 'Always Allow' and Background App Refresh to be enabled.

What are the subscription plans for NERV?

NERV offers two subscription plans: the 'E Plan' at $2.49 per month and the 'EE Plan' at $4.49 per month. These plans are part of the Supporters' Club for in-app purchases.

Is NERV accessible for users with visual impairments?

Yes, NERV features a barrier-free design with color schemes that are easy to distinguish for people with color blindness. It also uses a font with large, clear letters to make long bodies of text easy to read.

What devices is NERV available on?

NERV is available on iPhone and iPod devices. It was released on August 31, 2021, and its latest version is 6.2.0, last updated on September 11, 2025.

How does NERV prioritize information on its home screen?

The home screen displays the most relevant information based on your current time and location. If multiple alerts are active, NERV sorts them by type, elapsed time, and urgency, ensuring you always see the most important information first.

What is the user rating for NERV?

NERV has a high user rating of 4.8 stars based on 31 ratings. This indicates strong user satisfaction with the app's functionality and reliability.