マリンウェザー海快晴 <海専門の天気と気象予報アプリ>

156.2K installs
Ratings not yet available
7K monthly active users
$<10K monthly revenue est.
IAP 100% · Ad 0%
Install Trends
Weekly +33
Steady
Monthly +514
Steady

マリンウェザー海快晴 <海専門の天気と気象予報アプリ> Summary

マリンウェザー海快晴 <海専門の天気と気象予報アプリ> is a with in-app purchases Android app in Weather by Surflegend inc.. Released in Jan 2011 (15 years ago). It has about 156.2K+ installs Based on AppGoblin estimates, it reaches roughly 7K monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Oct 6, 2025, version 82.

Recent activity: 33 installs this week (514 over 4 weeks) showing steady growth View trends →

Data tracking: SDKs and third-party integrations were last analyzed on Mar 17, 2026. The app's network data flows (API traffic to/from the app and its SDKs) were last crawled on Oct 28, 2025.

Store info: Last updated on Google Play on Oct 6, 2025 (version 82).


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App Description

Umikaisei is a weather forecast app specializing in marine weather. It provides weather, wind and wave forecasts, tides, seawater temperature, moon phase, and more for approximately 18,000 coastal locations across Japan.

[One-month free trial available] Features hourly updated real-time wind forecasts. Provides specialized marine weather information for enthusiasts of a wide variety of marine sports and leisure activities, including fishing, diving, sailing, sea kayaking, and boating.

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■One-month free trial available
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Anyone signing up for the Basic Course for the first time can use the service for free for a limited period. (Previous Basic Course subscribers who have never used the free trial can also use the free trial.)

The free trial period is one month, including the start date of your initial purchase. If you do not cancel your subscription at least 24 hours before the end of the subscription period, you will automatically be charged for the next renewal.

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■ Main Features Overview
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The Umikaisei app is a marine-focused weather information service that provides pinpoint live reports and forecasts for over 18,000 beaches and coastal areas across Japan, as well as numerical wind and wave forecasts, image data, tidal information, and a moon phase calendar.
The app features a "real-time wind forecast," providing hourly updates of detailed wind information that was previously difficult to predict. Furthermore, wind and wave forecasts are displayed alongside the Japan Meteorological Agency's forecast data, in addition to proprietary forecast data developed in collaboration with Kyoto University. This allows users to see trends in both forecasts, making it easier to make decisions when setting sail, fishing, or engaging in various marine activities. Furthermore, the icon designs have been updated, and the animated weather information images and playback content are now easier to see and use.
With a simple search, you can view detailed weather information for your desired destination. Map search lets you easily find the weather for the location you want to know about by simply zooming in and out with your fingertips.

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■Free Features
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- Umikaisei's unique nationwide marine weather overview (updated daily)
- Weather forecasts and overviews from the Japan Meteorological Agency
- Current conditions, forecasts, and typhoon information from the Japan Meteorological Agency
- Precipitation and thunderstorm forecasts, and AMeDAS (provided in chart and table formats)
- Tide tables and moon phase calendar

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■Paid Features
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- Real-time wind forecasts updated every hour (every 30 minutes, up to 10 hours ahead)
- Wind direction and speed, wave height, wave direction, swell period, tide level, and more for over 11,000 coastal locations across Japan Pinpoint forecasts (hourly, up to 72 hours ahead)
- Offshore weekly forecasts (3-hourly, up to 168 hours ahead)
- GPS search function for pinpoint forecasts from your current location
- Unique wind and wave forecasts based on the WRF and SWAN models
- Dual forecasts that combine unique wind and wave forecasts with Japan Meteorological Agency forecasts
- My Page function for registering frequently used points and weather forecasting tools
- Push notification function for frequently used points when wind and wave size reaches certain values

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■ About Paid Subscriptions
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- Purchase Price: ¥480 per month (tax included)
*Price is subject to change.
- Valid for one month from the date of purchase.
- Charges will be applied to your iTunes account and will automatically renew every month (automatic renewal).

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■About Automatic Renewal Purchases
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- Unless you turn off automatic renewal at least 24 hours before your subscription's renewal date, your subscription will automatically renew and you will be charged for the following month.
-How to cancel automatic renewal (from an Android device)
1. Open the Google Play app
2. Tap the profile icon in the upper right corner
3. Tap Payment & Subscriptions > Subscriptions
4. Tap Cancel Subscription

*You can check the next automatic renewal date and repurchase by following steps 1 through 3 above.
*You cannot cancel automatic renewal from within the Umikaisei app.
*Please complete the procedure from the Play Store.

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■ About Suspending and Cancelling a Purchase
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- You can cancel your purchase during the purchase period.
- Even if you cancel your purchase, you can still use the service for one month from the purchase date.
- Pro rata refunds will not be given for the number of days between the date you cancel your purchase and the expiration date of your purchase period.

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- ​​Terms of Use URL
https://www.umikaisei.jp/help/android/4679

- Privacy Policy URL
https://www.umikaisei.jp/help/android/4683

Provided by: Surf Legend Co., Ltd. (Weather Forecasting Business License No. 70)