JM-Weather is an app by Japan Radio Co., Ltd. in the Weather category, listed since at least February 2025. It has no native code, so it runs on any Android processor.
It asks for 4 permissions, none of them sensitive. The app offers in-app purchases through Google Play.
Description
From the listing uploaded by “appupdater”.
J-Marine app 2nd to provide the safety and security of sea
★ It is the people that the weather of the sea is a concern, "weather oceanographic information" app!
It provides a transition and forecast weather map and typhoon information of the weather map.
It also displayed over the weather sea conditions information, such as rainfall, wind speed and direction, wave height, period, wave direction to the weather map and typhoons information. It is now possible to further display a sea warning and marine forecast.
★ "precipitation nowcasting information" can be confirmed as a guerrilla heavy rain measures!
Precipitation Nowcast information that is updated every five minutes can be confirmed, you can take advantage of as well guerrilla heavy rain measures at those who use on land.
[Application function summary]
■ forecast weather map with the latest weather map, provides a typhoon information
It displays the latest weather map. (From one day before until now) past the weather and, you can play display the forecast weather map (after 24 - 48 hours). At the time of typhoon occurrence, to display the play-by-play and the forecast of the typhoon.
■ piled weather walrus layer can be displayed
Superimposed layers of the "weather map", "rain", "precipitation nowcasting information", "Wind", "height", "period", "wave direction" "maritime warning," "sea temperature", "ocean current", "salt", "sea level." since it is possible to display together, you can quickly grasp the periphery of the weather oceanographic information.
■ easy to understand at the time of maneuvering can "head up display"
Considering the use of on board, the "heads-up display" to display the traveling direction to the above, usually best to use, you can switch to the "north-up display" to be displayed on the top of the north of direction.
【Notes】
● weather oceanographic data provider is the Japan Meteorological Agency (general Foundation Meteorological Business Support Center).
● This app will make the network communication. If the communication can not be carried out, it will not be able to launch the app. Please refer to the start-up at the network communication possible locations.
● by this application situation, display and in a state in which the image is disturbed, it may be displayed in some missing state. At that time we ask to you to re-acquire by pressing the reload button located in the screen.
● This application, smart device built-in GPS, compass, gyro sensor, at the same time use, such as parsing of the map, because it is easy application multiplied by a high load on the CPU and the like, it may work depending on the model is not stable.
● head-up function of this app makes use of the smart device built-in compass, affected by the equipment and environmental interference that generates a magnetic, might exact information is not displayed.
● This app is not a nautical chart.
● This application, in order to consume a lot of battery, please prepare in advance power supply state or spare battery and the like.
● weather walrus information of this app will be updated from time to time up-to-date information to match the data provider of the announcement. Update time of each piece of information is as follows.
[Meteorological oceanographic data update frequency and update time]
For the update frequency and update time of each data, refer to the Help in the app.
[Application Information]
※ corresponding terminal
Android OS 4.0 or higher
Memory 1GB or more recommended
※ authority that the application uses
■ in-app purchases
It includes in-app billing to buy the oceanographic data that is distributed for a fee.
■ your position information
While viewing the map, it will be used in the function to jump to his position around.
Except when the user to use this feature, but does not position acquisition.
(In the position acquisition, will be displayed in red jump button. Suspends the acquisition of the position by pressing the button again at this time.)
■ image on the terminal, video, audio, etc.
Used to store and read the configuration information.
Access to other files you do not do.
【Terms of service】
http://www.jmarinecloud.com/terms/jm_weather/terms.html
【privacy policy】
http://www.jmarinecloud.com/privacy.html
Security & authenticity
Security rating: Trusted
Signing certificate
Signature matches the Google Play versionChecked by the source store on Jul 16, 2025.
Certificate issued to “JRC”This is the certificate of the Google Play version.
Store checks and file details
Developer signature verifiedJul 16, 2025
Validated against Google PlayJul 16, 2025
Signed byCN=Chihiro Hirakawa, OU=JmarineCloud, O=JRC, L=Tokyo, ST=Tokyo, C=JP
Uploaded by “appupdater”Gold tier · 117,810 followers · uploading since 2020
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (4)
JM-Weather requests 4 permissions, none of them sensitive.
Full network accessandroid.permission.INTERNET
In-app purchases (Google Play Billing)com.android.vending.BILLING
Can I install this APK over the version I already have?
Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.
Is JM-Weather free?
The APK is free to download, but the app offers in-app purchases through Google Play.
Is the JM-Weather APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is c848ebb0d6e88b58abdafc48e69e4387.