NERV Disaster Prevention Downloads & RevenueNERV Disaster Prevention · App Store & Google Play
NERV Disaster Prevention gets 1k+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
NERV Disaster Prevention by Gehirn Inc. is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
NERV Disaster Prevention update history & changes
Last change · 61 events since 25 Aug 2021Full timeline ↓Full timeline · 61 events
- 🌟NERV Disaster Prevention featured by AppleiOSapps · JP
- 🌟NERV Disaster Prevention featured by AppleiOSapps · JP
- 📈NERV Disaster Prevention entered the top 10iOSTop Free · Weather · KR
- 🌟NERV Disaster Prevention featured by Apple: “おすすめのアプリ”iOStoday · JP
- 🌟NERV Disaster Prevention featured by Apple: “おすすめのアプリ”iOStoday · JP
- 🌟NERV Disaster Prevention featured by Apple: “おすすめのアプリ”iOStoday · JP
- 🌟NERV Disaster Prevention featured by Apple: “おすすめのアプリ”iOStoday · JP
- 🌟NERV Disaster Prevention featured by Apple: “おすすめのアプリ”iOStoday · JP
- 📈NERV Disaster Prevention entered the top 100iOSTop Grossing · Weather · AU
- 🌟NERV Disaster Prevention featured by Apple: “おすすめのアプリ”iOStoday · JP
- 🌟NERV Disaster Prevention featured by Apple: “おすすめのアプリ”iOStoday · JP
- 📈NERV Disaster Prevention entered the top 100 in 2 chartsAndroidTop Free · Weather · ES · Top Free · Weather · TH
- ✏️NERV Disaster Prevention added hidden keywords: オールインワンiOSwords in the App Store's hidden keyword field (found by probing search)
- 📈NERV Disaster Prevention entered the top 100AndroidTop Free · Weather · KR
- ✏️NERV Disaster Prevention added hidden keywords: alarmiOSwords in the App Store's hidden keyword field (found by probing search)
- 📈NERV Disaster Prevention entered the top 100AndroidTop Free · Weather · TW
- 📈NERV Disaster Prevention charting in a new countryAndroidTaiwan
- 📊NERV Disaster Prevention: downloads up ×2.6 in a weekAndroidabout 1.9k a day now (our estimate)
- 📊NERV Disaster Prevention: downloads up ×2.6 in a weekiOSabout 3.1k a day now (our estimate)
- 📈NERV Disaster Prevention charting in a new countryAndroidSpain
- 📈NERV Disaster Prevention entered the top 100AndroidTop Free · Weather · NL
- ✏️NERV Disaster Prevention added hidden keywords: earthquakeiOSwords in the App Store's hidden keyword field (found by probing search)
- 📈NERV Disaster Prevention new best rank in the overall chart: #43AndroidTop Free · All Apps · JP
- ✏️NERV Disaster Prevention added hidden keywords: prep, warningsiOSwords in the App Store's hidden keyword field (found by probing search)
- 📈NERV Disaster Prevention hit #1AndroidTop Free · Weather · JP
- 📈NERV Disaster Prevention entered the top 100 in 2 chartsAndroidTop Free · All Apps · JP · Top Free · Weather · US
- ✏️NERV Disaster Prevention added hidden keywords: warningsiOSwords in the App Store's hidden keyword field (found by probing search)
- 📈NERV Disaster Prevention entered the top 10AndroidTop Free · Weather · JP
- 📈NERV Disaster Prevention entered the top 100AndroidTop Free · Weather · AE
- ✏️NERV Disaster Prevention added hidden keywords: 震度, ゆれくるコールiOSwords in the App Store's hidden keyword field (found by probing search)
- 📈NERV Disaster Prevention hit #1 in 2 chartsiOSTop Free · All Apps · JP · Top Free · Weather · JP
- 📈NERV Disaster Prevention entered the top 10 in 4 chartsiOSTop Free · Weather · AU · Top Free · Weather · CA · Top Free · Weather · DE · Top Free · Weather · GB
- 📈NERV Disaster Prevention entered the top 100 in 3 chartsAndroidTop Grossing · Weather · MX · Top Grossing · Weather · NL · Top Grossing · Weather · VN
- 📈NERV Disaster Prevention charting in a new country in 3 chartsAndroidMexico · Netherlands · Vietnam
- 📈NERV Disaster Prevention entered the top 100 in 2 chartsAndroidTop Grossing · Weather · TH · Top Grossing · Weather · TR
- 📈NERV Disaster Prevention charting in a new country in 2 chartsAndroidThailand · Turkey
- ✏️NERV Disaster Prevention added hidden keywords: 気象ニュースiOSwords in the App Store's hidden keyword field (found by probing search)
- ✏️NERV Disaster Prevention added hidden keywords: 天気予報アプリiOSwords in the App Store's hidden keyword field (found by probing search)
- 📈NERV Disaster Prevention charting in a new countryAndroidSouth Korea
- 📈NERV Disaster Prevention entered the top 100AndroidTop Free · Weather · ID
- 🌟NERV Disaster Prevention featured by AppleiOSapps · JP
- 📈NERV Disaster Prevention entered the top 100AndroidTop Free · Weather · RU
- 📈NERV Disaster Prevention charting in a new countryAndroidRussia
- ✏️NERV Disaster Prevention added hidden keywords: warningiOSwords in the App Store's hidden keyword field (found by probing search)
- 🌟NERV Disaster Prevention featured by AppleiOSapps · JP
- ✏️NERV Disaster Prevention added hidden keywords: 防災アプリ, 災害情報, 地震速報, 雨雲レーダー +1 moreiOSwords in the App Store's hidden keyword field (found by probing search)
- 🌟NERV Disaster Prevention featured by AppleiOSapps · JP
- 📈NERV Disaster Prevention entered the top 10iOSTop Free · Weather · RU
- 🌟NERV Disaster Prevention featured by AppleiOSapps · JP
- 🌟NERV Disaster Prevention featured by AppleiOSapps · JP
- 🌟NERV Disaster Prevention featured by AppleiOSapps · JP
- 🆕NERV Disaster Prevention first spotted by AppInsiderAndroidIndia
- 🆕NERV Disaster Prevention first spotted by AppInsideriOS#58 in Top Free · Weather · Russia
- 🌟NERV Disaster Prevention featured by AppleiOSapps · JP
- 📦NERV Disaster Prevention version 7.1.0iOSNo release notes
- 📦NERV Disaster Prevention version 7.1.0Android- 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
- 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.… more - 🆕NERV Disaster Prevention released on the App StoreiOS
- 🆕NERV Disaster Prevention released on Google PlayAndroid
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Weather FreeNERV Disaster Prevention at a glance
AI summary written from our chart and store data, 2026-11-07. It can be wrong: check the numbers above.
A free disaster prevention app delivering real-time earthquake, tsunami, and weather alerts from the Japan Meteorological Agency to residents and visitors in Japan. The app holds the #1 position in the Japanese Weather Free category and ranks within the top 50 for weather apps in multiple international markets including Canada, Australia, and the UK.
Similar apps: Yahoo! Weather, AccuWeather, MyRadar
App Store
App details
App privacy Measured
NERV Disaster Prevention’s App Store privacy label declares 0 data categories used to track you across other companies’ apps and websites, 0 linked to your identity and 2 collected anonymously.
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
Google Play
App details
Tech stack
Trackers and permissions of build v7.0.0, from the εxodus privacy report (CC BY-SA).
NERV Disaster Prevention downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | 1k+ | 1M+ |
| Google Play | 1k+ | 1M+ Measured |
| Total | 1k+ Confidence | 1M+ Confidence |
How this is calculated
Where NERV Disaster Prevention's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Retention · share of new users still active
Time spent · per daily user
How this is calculated
In-app revenue
Worldwide, what users spend before Apple and Google take their fee.
| Store | Per day | Per month | Share |
|---|---|---|---|
| App Store | |||
| Google Play | |||
| Total | Confidence | 100% |
Business model: In-app purchase-led
How NERV Disaster Prevention makes money: subscriptions, one-off purchases and ads.
Top in-app purchases · App Store US, most popular first
| 1 | E Plan | |
| 2 | EE Plan |
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | #1 Weather Free | 16 of 30 countries | #37 | – |
| Google Play | #2 Weather Grossing | 17 of 23 countries | #135 | – |
Full chart lists: App Store · Google Play.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.7 ★ | 47 |
| Google Play | 4.4 ★ | 5.8k 24 written reviews |
| Both stores | 4.4 ★ weighted by ratings | 5.8k |
What users say about NERV Disaster Prevention
From the 19 most recent App Store reviews in the US.
Users highly praise the app's reliability for earthquake and disaster alerts in Japan, noting it often outperforms official government notifications. The Evangelion-themed design is a significant draw, though some users report notification failures or desire US-based functionality.
Mostly positive (84% of recent reviews give 4–5 stars). People like it for being useful, and its design.
What people like
- Useful: “Of that, I do recommend it”
- Design: “Fast, helpful, tasteful, good UI”
- Speed & performance: “Fast, helpful, tasteful, good UI”
- Ease of use: “It has a simple design and easy to understand”
About NERV Disaster Prevention
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
NERV Disaster Prevention App Store
NERV Disaster Prevention gets 1k+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
NERV Disaster Prevention is #1 in Weather Free in Japan and charting in 16 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
24 Sep 2026 Weather FreeNERV Disaster Prevention at a glance
AI summary written from our chart and store data, 2026-11-07. It can be wrong: check the numbers above.
A free disaster prevention app delivering real-time earthquake, tsunami, and weather alerts from the Japan Meteorological Agency to residents and visitors in Japan. The app holds the #1 position in the Japanese Weather Free category and ranks within the top 50 for weather apps in multiple international markets including Canada, Australia, and the UK.
Similar apps: Yahoo! Weather, AccuWeather, MyRadar
NERV Disaster Prevention on the App Store
App details
App privacy Measured
NERV Disaster Prevention’s App Store privacy label declares 0 data categories used to track you across other companies’ apps and websites, 0 linked to your identity and 2 collected anonymously.
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
NERV Disaster Prevention downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where NERV Disaster Prevention's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Retention · share of new users still active
Time spent · per daily user
How this is calculated
In-app revenue
Worldwide, what users spend in NERV Disaster Prevention before Apple and Google take their fee.
How this is calculated
Business model: In-app purchase-led
How NERV Disaster Prevention makes money: subscriptions, one-off purchases and ads.
Top in-app purchases · App Store US, most popular first
| 1 | E Plan | |
| 2 | EE Plan |
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | WeatherFree | #1 |
| Japan | All AppsFreeWeatherGrossing | #8 |
 South Korea | WeatherFree | #5 |
 United Kingdom | WeatherFree | #9 |
 Germany | WeatherFree | #8 |
 United States | WeatherFree | #37 |
 Australia | WeatherFree | #8 |
 India | WeatherFree | #14 |
 France | WeatherFree | #21 |
 Indonesia | WeatherFree | #13 |
| Russia | WeatherFree | #21 |
 Canada | WeatherFree | #30 |
 China | WeatherFree | #121 |
 United Arab Emirates | WeatherFree | #17 |
 Brazil | WeatherFree | #58 |
 Italy | WeatherFree | #56 |
| Indonesia | WeatherGrossing | #86 |
 Saudi Arabia | WeatherFree | #92 |
Apps near NERV Disaster Prevention on the chart
Weather Free, around #1.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about NERV Disaster Prevention
From the 19 most recent App Store reviews in the US.
Users highly praise the app's reliability for earthquake and disaster alerts in Japan, noting it often outperforms official government notifications. The Evangelion-themed design is a significant draw, though some users report notification failures or desire US-based functionality.
Mostly positive (84% of recent reviews give 4–5 stars). People like it for being useful, and its design.
What people like
- Useful: “Of that, I do recommend it”
- Design: “Fast, helpful, tasteful, good UI”
- Speed & performance: “Fast, helpful, tasteful, good UI”
- Ease of use: “It has a simple design and easy to understand”
About NERV Disaster Prevention
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
Latest updates
NERV Disaster Prevention Android
NERV Disaster Prevention gets 1k+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
NERV Disaster Prevention is #2 in Weather Grossing on Google Play in Japan and charting in 17 of 23 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
Weather GrossingNERV Disaster Prevention at a glance
AI summary written from our chart and store data, 2026-11-05. It can be wrong: check the numbers above.
A free disaster prevention app by Gehirn Inc. that provides real-time earthquake, tsunami, and weather alerts optimized for users in Japan. The app ranks #2 in JP Weather Grossing and #8 in JP Weather Free, indicating strong monetization or engagement despite being a free service, with notable presence in emerging markets like Turkey, India, and Vietnam.
Similar apps: Yahoo! Weather, AccuWeather, Japan Meteorological Agency (JMA) Offici
NERV Disaster Prevention on Google Play
App details
Tech stack
Trackers and permissions of build v7.0.0, from the εxodus privacy report (CC BY-SA).
NERV Disaster Prevention downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where NERV Disaster Prevention's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Retention · share of new users still active
Time spent · per daily user
How this is calculated
In-app revenue
Worldwide, what users spend in NERV Disaster Prevention before Apple and Google take their fee.
How this is calculated
Business model: In-app purchase-led
How NERV Disaster Prevention makes money: subscriptions, one-off purchases and ads.
Top in-app purchases · App Store US, most popular first
| 1 | E Plan | |
| 2 | EE Plan |
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | WeatherGrossing | #2 |
| Japan | WeatherFree | #5 |
| Japan | All AppsFree | #147 |
| India | WeatherGrossing | #21 |
| United States | WeatherFree | #135 |
 Mexico | WeatherGrossing | #21 |
| United Kingdom | WeatherFree | #59 |
| Saudi Arabia | WeatherGrossing | #20 |
| Indonesia | WeatherGrossing | #20 |
| Australia | WeatherFree | #42 |
 Turkey | WeatherGrossing | #21 |
| United Arab Emirates | WeatherGrossing | #23 |
 Netherlands | WeatherGrossing | #24 |
| Germany | WeatherFree | #100 |
| Canada | WeatherFree | #61 |
 Thailand | WeatherGrossing | #20 |
 Vietnam | WeatherGrossing | #18 |
| France | WeatherFree | #95 |
 Taiwan | WeatherFree | #48 |
| United Arab Emirates | WeatherFree | #52 |
| Indonesia | WeatherFree | #83 |
Apps near NERV Disaster Prevention on the chart
Weather Grossing, around #2.
Ratings
Google Play, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about NERV Disaster Prevention
From the 63 most recent Google Play reviews in the US.
Users in Japan highly value the app's accurate, fast earthquake alerts and Evangelion-themed interface, often calling it essential for safety. However, international users frequently express frustration that the app is strictly limited to Japanese locations, rendering it useless for those outside the country.
Mixed but leaning positive (70% of recent reviews give 4–5 stars). People like it for being useful, and regular updates. The main complaints are about missing features or content. Recent reviews are more negative than earlier ones.
What people like
- Useful: “So useful for earthquake information in Japan”
- Updates: “:) <3 Only occasional update missteps ever cause a problem”
- Features & content: “The best feature on the earthquake alerts is the predicted countdown before you will feel the effects”
Common complaints
- Features & content: “It says there's eartquake feature but there is none”
About NERV Disaster Prevention
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
What's new in 7.1.0
- Weather Flash Reports and Weather Information can now be delivered as push 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.
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