# precipitation radar alarm HD — Rain cloud radar Japan > Japan hourly weather forecast and rain alarm with radar. (iPhone/iPad app by Digital Equality, Inc..) - Source: https://appshunter.io/ios/app/precipitation-radar-alarm-hd/id911420224 (this page in markdown: same URL + `.md`) - Developer: [Digital Equality, Inc.](https://appshunter.io/developer/671003496) - Category: Weather, Lifestyle - Price: Free - Rating: 4.00/5 from 3 App Store ratings · 48 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 23 MB - Languages: American English, Japanese - Released: 2014-09-30 - Data updated: 2026-08-29 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/precipitation-radar-alarm-hd/id911420224/reviews.md ## What is precipitation radar alarm HD? This application is only available in Japan. * Features * This is application to know weather forecast for the next hour in Japan. As means to know it is following, you can know it at your convenience. * Continued use of GPS running in the background can dramatically decrease battery life. * - Step 1. RAIN ALARM (optional) - This app notifies you in case that it will rain in place you specified in advance. You can receive rain notifications without lunching this application. If you worry about received alarm, let's launch this app to know detail in weather forecast. You can get the same information by launching this app without notifications (Go to Step2). - Step 2. WATCH weather forecast - You can watch weather forecast for the next hour. If you want to know reasons of prediction, you can go to next step. - Step 3. WATCH movement of rain cloud - You can watch information for movement of rain cloud using High-Resolution precipitation radar released by Japan Meteorological Agency in August 2014. ## Key features - Hourly weather forecast for Japan - Rain alarm notifications - High-resolution precipitation radar - Rain cloud movement tracking - Location-based rain alerts ## Recent user reviews (10 of 48) All indexed reviews: https://appshunter.io/ios/app/precipitation-radar-alarm-hd/id911420224/reviews.md ### 1/5 — 過去は要らないから、これからの予想を細かく書いて欲しい *2026-05-31* 15分先くらいしか、役にたたない ### 1/5 — マップデザイン… *2026-05-13* 使う気にならない。国土地理院のマップだから？黒の輪郭線も野暮ったいし色使いも✖️ デザインのアップデートを望む。 ### 1/5 — 時系列が逆では？ *2025-12-24* 「最近の降雨予報」の時系列が逆のように思われます。 今後の天気予報が知りたいですが、今の状態は過去の天気が表示され予報にはなっていないです。 改善検討を願います。 ### 1/5 — 適当 *2025-12-14* 全然 雨が降る気配が無いのに通知が来る。 分からん！ 最初のうちは 信用して周りの人に告知して大恥かいた。 ### 2/5 — 起動しなくなった *2025-11-11* 便利に使えていたのですが、起動時に「読み込み中」と表示されたまま使えなくなった。iOS26に対応してないのかも。 ### 2/5 — 機能不足 *2025-04-15* 表示エリアが広すぎ、もっと詳細なエリア表示にならないものでしょうか。発雷エリア表示など気象庁番の機能は欲しいところ。 ### 3/5 — 天気図 *2025-01-03* もっと細かのが欲しい ### 5/5 — バージョンUPして下さい *2024-08-25* 地域名が表示されると良い ### 4/5 — 見やすいですね。 *2024-03-16* 沢山ある雨レーダーの中でとても見やすいです。余計な地名も入れてなく愛用しています。欲を言えば天気図が入るとピカイチです。少し料金を出しでも良いです。 ### 1/5 — ハズレ… *2022-06-26* 天気予報アプリとは別に雨雲に特化したアプリを入れておこうと思い使ってみたんだが、期待ハズレもいいとこだった。 削除します。 ## Frequently asked questions about precipitation radar alarm HD ### What does the precipitation radar alarm HD app do? This application provides hourly weather forecasts specifically for Japan. It allows users to monitor the movement of rain clouds using high-resolution radar data and can send optional rain alarm notifications for pre-specified locations. ### How does the rain alarm feature work? The rain alarm feature can notify you if rain is predicted for a location you've set in advance. You can receive these alerts even when the app is not actively running. If you receive an alarm, you can open the app for more detailed weather forecast information. ### What kind of weather information can I see? You can watch the weather forecast for the next hour. The app also displays the movement of rain clouds using high-resolution precipitation radar data from the Japan Meteorological Agency, allowing you to understand the reasons behind the predictions. ### Is this app available outside of Japan? No, this application is exclusively available for use in Japan. Its weather data and features are tailored to the meteorological conditions and services within Japan. ### Does the app have any costs associated with it? The application is free to use and is supported by advertisements. There are no in-app purchases mentioned. ## Version history (last 5 releases) ### 1.2.0 — 2024-10-28 Fixed minor issues. ### 1.1.0 — 2022-09-23 Fixed minor issues. ### 1.0.0 — 2021-09-12 Fixed some minor issues. ### 0.9.0 — 2021-07-11 Fixed minor issue. ### 0.8.0 — 2020-07-07 - Fixed minor issue. ## Apps similar to precipitation radar alarm HD | App | Rating | Price | Category | | --- | --- | --- | --- | | [Weather - Live Weather & Radar](https://appshunter.io/ios/app/weather-live-weather-and-radar/id1516956008) | 4.5 (46) | Free | Weather | | [Thermo - Live Thermometer](https://appshunter.io/ios/app/thermo-live-thermometer/id1197885834) | 4.6 (129) | Free | Weather | | [Simple Moon Phase Calendar](https://appshunter.io/ios/app/simple-moon-phase-calendar/id1279710898) | 4.8 (84) | Free | Weather | | [Cloudy - Weather](https://appshunter.io/ios/app/cloudy-weather/id1295631237) | 4.5 (59) | $0.99 | Weather | | [Live Air: Global Air Quality](https://appshunter.io/ios/app/live-air-global-air-quality/id1015214276) | 2.6 (44) | Free | Weather | | [GlobalCast](https://appshunter.io/ios/app/globalcast/id662106651) | 4.5 (39) | Free | Weather | ## More apps by Digital Equality, Inc. - [全国バス乗り換え案内・路線図](https://appshunter.io/ios/app/id671003493) - [Japan train card balance check](https://appshunter.io/ios/app/japan-train-card-balance-check/id1479319615) All apps by Digital Equality, Inc.: https://appshunter.io/developer/671003496 ## Related topics [precipitation radar alarm hd](https://appshunter.io/ios/topics/precipitation-radar-alarm-hd) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*