Japan Alerts Downloads & RevenueJapan Alerts · App Store
Japan Alerts is #15 in Weather Grossing in South Korea and charting in 14 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperItchigoo
CategoryWeather
PriceFree
Released
Rating★ 4.4 (5)
Version3.2
Age rating4+
First seen by us
24 Sep 2026
24 Sep 2026Installs (est.)10k+ worldwide
📈Entered the top 100📈Charting in a new country✏️New screenshots⭐Passed 100 ratings✏️New screenshots📦Updated to version 3.2⭐Passed 100 ratings📦Updated to version 3.1🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 39 events
- 📈Japan Alerts entered the top 100Top Free · Weather · IN
- 📈Japan Alerts charting in a new countryIndia
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · US
- 📈Japan Alerts entered the top 10Top Grossing · Weather · KR
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · GB
- 📈Japan Alerts entered the top 100Top Grossing · Weather · AU
- ✏️Japan Alerts: new screenshots9 screenshots (was 9) · IT
- ✏️Japan Alerts: new screenshots9 screenshots (was 9) · CA, AU
- 📈Japan Alerts charting in a new countryIndonesia
- ✏️Japan Alerts: new screenshots9 screenshots (was 9) · BR
- ✏️Japan Alerts: new screenshots9 screenshots (was 9) · RU
- ✏️Japan Alerts: new screenshots9 screenshots (was 9) · KR
- ✏️Japan Alerts: new screenshots9 screenshots (was 9) · JP
- ✏️Japan Alerts: new screenshots9 screenshots (was 9) · FR
- ✏️Japan Alerts: new screenshots9 screenshots (was 9) · DE
- ✏️Japan Alerts: new screenshots9 screenshots (was 9) · CN
- 📦Japan Alerts updated to version 3.2• 更精准的通知：当气象厅在您地点所在地区测得的震度达到您设定的阈值时，您会收到通知。
• 您各个地点的震度：每次地震都会显示您震动最强的地点的震度，详情页可查看您所有地点。
• 问题修复与改进。 - ✏️Japan Alerts: new screenshots9 screenshots (was 10) · RU
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · JP
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · IT
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · DE
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · CA, AU
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · CN
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · FR
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · BR
- ✏️Japan Alerts: new screenshots9 screenshots (was 10) · KR
- 📦Japan Alerts updated to version 3.1버전 3.1의 새로운 기능
• 내 장소 주변의 흔들림: 유감 지진이 발생할 때마다 기상청이 내 장소 근처에서 측정한 진도를 지도로 볼 수 있습니다. 프리미엄.
• 화산재가 어디에 떨어질지: 분화 후 기상청의 화산재 강하 예보를 1시간 단위로 보고, 내 각 장소에 예상되는 화산재의 양도 알 수 있습니다. 프리미엄.
• 버그 수정 및 개선. - 📦Japan Alerts updated to version 3.0A versão 3.0 traz muito mais alertas da Agência Meteorológica do Japão e um mapa que mostra o que eles anunciam.
• Com o Premium, você recebe novos alertas para cada um dos seus locais: cheias de rio, faixas de chuva, vento, neve, tornados, insolação, alertas urgentes de erupção, queda de cinzas e tremores de longo período em prédios altos.
• O Premium também avisa você quando a Agência emite um aviso de megaterremoto para a Fossa de Nankai ou ao largo de Hokkaido e Sanriku. A aba Preparo explica o que fazer e se os seus locais estão na área.
• Um novo mapa do tempo mostra o que um alerta anuncia: radar de chuva, satélite, a trajetória prevista do tufão, trovoadas, tornados e faixas de chuva, para assinantes do Premium.
• Quando a chuva está a caminho da sua casa, o Premium mostra um cartão no topo dos seus alertas com o horário previsto de chegada.
• Para todos: terremotos longe do Japão agora mostram onde aconteceram, e todos os horários seguem o fuso horário do seu celular.
Obrigado por usar o Japan Alerts. Fique em segurança.… more - 📦Japan Alerts: now updating weekly4 updates in 30 days, after a quiet two months
- 📦Japan Alerts updated to version 2.5.1• More accurate detection of places outside Japan when setting the place you care about. The app now identifies these cases far more reliably and additionally helps you move your place to Japan.
• Cleared alerts now leave your list. When the JMA lifts an evacuation or rain warning, the card disappears right away instead of lingering for days.
• Japanese reviewed by a native speaker, across alert titles, push notifications and safety instructions.… more - 📦Japan Alerts updated to version 2.5Evakuierungswarnungen folgen jetzt Ihrer Gemeinde, und jede Regen- und Hochwasserwarnung der Stufe 3 erreicht Sie.
Ihr Feed zeigt die Evakuierungswarnungen für Ihre eigene Stadt oder Ihren Bezirk statt für die ganze Präfektur: Ein Zuhause im Zentrum von Tokio sieht die wenigen Warnungen, die es betreffen, statt Dutzende. Eigene Überwachungszonen funktionieren genauso, jede ist ihrer eigenen Gemeinde zugeordnet, und Push-Benachrichtigungen werden Zone für Zone geprüft: Zwei Zonen in derselben Präfektur mit unterschiedlichen Schwellen verhalten sich genau so, wie Sie es eingestellt haben. Wenn Sie Ihr Zuhause an eine neue Adresse verlegen, folgen die Warnungen sofort der neuen Gemeinde.
Starkregen- und Hochwasserwarnungen der Stufe 3 erscheinen jetzt immer in Ihrem Feed, auch an den ereignisreichsten Tagen, und jede Warnung nennt nur die Zonen, die sie tatsächlich betrifft. Die gesamte japanische Oberfläche wurde von einer Muttersprachlerin überprüft, mit klareren Formulierungen und einem einheitlichen Ton auf jedem Bildschirm.
Danke, dass Sie Japan Alerts nutzen. Bleiben Sie sicher.… more - 🆕Japan Alerts first spotted by AppInsider#93 in Top Free · Weather · Russia
- 📦Japan Alerts version 2.4.1No release notes
- 🆕Japan Alerts released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.4 ★
5 ratings
Measured
Best rank now
#15
Weather GrossingMeasured
New ratings a week
6.1
▼ -18% vs the 2 weeks before
Measured
Japan Alerts on the App Store
App details
App ID
6759379739
Publisher
Harold CHATENET
On the store since
Mar 2026
Under a year
Minimum OS
iOS 15.1+
iPhone 6s and later
Devices
iPhone · iPad
Content rating
4+
Languages
12
EN FR DE IT JA KO PT RU ZH ES ZH VI
Size
139 MB
Also listed in
Travel
Japan Alerts downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Japan Alerts'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.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | WeatherGrossing | #15 |
| South Korea | WeatherFree | #14 |
 Japan | WeatherFree | #42 |
 China | WeatherGrossing | #71 |
 Germany | WeatherFree | #33 |
 United States | WeatherFree | #185 |
 United Kingdom | WeatherFree | #76 |
| United Kingdom | WeatherGrossing | #97 |
 Australia | WeatherFree | #42 |
| China | WeatherFree | #160 |
 France | WeatherFree | #75 |
| France | WeatherGrossing | #99 |
 Brazil | WeatherFree | #71 |
| Australia | WeatherGrossing | #87 |
| Russia | WeatherFree | #63 |
 Italy | WeatherGrossing | #74 |
 India | WeatherFree | #93 |
| Italy | WeatherFree | #87 |
 Canada | WeatherFree | #142 |
 Indonesia | WeatherFree | #167 |
Apps near Japan Alerts on the chart
Weather Grossing, around #15.
Ratings
App Store, worldwide.
Rating
4.4 ★
5 ratings
Measured
Ratings
5
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
6.1
▼ -18% vs the 2 weeks before
Written reviews a week
under 1
US App Store
Lifetime rating
4.6★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
67/100
faster than 85% of Weather apps
New ratings by country (3)
| Country | New ratings a week | Share | Last 2 weeks vs the 2 before |
|---|---|---|---|
| Germany | 1.8 | 39% | – |
| United States | 1.6 | 35% | – |
| Japan | 1.2 | 26% | – |
App Store ratings in the countries we track, 4-week average.
Review 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 Japan Alerts
From recent reviews.
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
- Travellers — 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: epicentres, 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, customisable 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
- Travelling to Osaka next month? Add it as a zone before you go.
INTERACTIVE MAP & SHELTERS
- Epicentres, 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 epicentre, 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 s
WHO IS THIS APP FOR?
- Residents and expats who need alerts in their own language
- Travellers — 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: epicentres, 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, customisable 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
- Travelling to Osaka next month? Add it as a zone before you go.
INTERACTIVE MAP & SHELTERS
- Epicentres, 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 epicentre, 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 s
Latest updates
3.2
• 更精准的通知：当气象厅在您地点所在地区测得的震度达到您设定的阈值时，您会收到通知。
• 您各个地点的震度：每次地震都会显示您震动最强的地点的震度，详情页可查看您所有地点。
• 问题修复与改进。
3.1
버전 3.1의 새로운 기능
• 내 장소 주변의 흔들림: 유감 지진이 발생할 때마다 기상청이 내 장소 근처에서 측정한 진도를 지도로 볼 수 있습니다. 프리미엄.
• 화산재가 어디에 떨어질지: 분화 후 기상청의 화산재 강하 예보를 1시간 단위로 보고, 내 각 장소에 예상되는 화산재의 양도 알 수 있습니다. 프리미엄.
• 버그 수정 및 개선.
3.0
A versão 3.0 traz muito mais alertas da Agência Meteorológica do Japão e um mapa que mostra o que eles anunciam.
• Com o Premium, você recebe novos alertas para cada um dos seus locais: cheias de rio, faixas de chuva, vento, neve, tornados, insolação, alertas urgentes de erupção, queda de cinzas e tremores de longo período em prédios altos.
• O Premium também avisa você quando a Agência emite um aviso de megaterremoto para a Fossa de Nankai ou ao largo de Hokkaido e Sanriku. A aba Preparo explica o que fazer e se os seus locais estão na área.
• Um novo mapa do tempo mostra o que um alerta anuncia: radar de chuva, satélite, a trajetória prevista do tufão, trovoadas, tornados e faixas de chuva, para assinantes do Premium.
• Quando a chuva está a caminho da sua casa, o Premium mostra um cartão no topo dos seus alertas com o horário previsto de chegada.
• Para todos: terremotos longe do Japão agora mostram onde aconteceram, e todos os horários seguem o fuso horário do seu celular.
Obrigado por usar o Japan Alerts. Fique em segurança.
Store changes
What Japan Alerts changed on its store page: name, icon, screenshots, price, size, languages, requirements.
New screenshots
9 screenshots (was 10)
New screenshots
9 screenshots (was 10)
New screenshots
9 screenshots (was 9)
