天気R is a free weather app developed by weazzar for Android users. The app has surpassed 240,000 downloads and has a simple interface with fast performance.

The app's concept is to provide users with a simple design and essential features that a weather app should have. The information displayed includes today and tomorrow's weather forecast (updated three times a day), weekly weather forecast (updated three times a day), rain cloud radar (updated every 5-10 minutes), lunar phase and tide information, average temperature, electric power usage rate (updated hourly by each electric power company), and weather widgets.

To use the app, select your desired location on the "Location Settings" screen, and the app will automatically display the weather information for that location. The design of the app also changes depending on the location selected. The app automatically updates the information whenever you open it, but you can also manually update it by clicking the button in the top right corner. The app also includes weather widgets, but the installation process may vary depending on the device.

天気R is compatible with Android 2.1 and above and is available for free download.