RainViewer is a free weather radar and rain forecast app that allows users to track rain, snow, or any storm on the live radar map. The app forecasts where the storm will be moving within the next 90 minutes, building a future radar animation for 1000+ radars worldwide. Users can add their favorite places and get rain alerts to plan their day ahead. The app also offers a 24-hour and 7-day weather forecast on a beautifully streamlined graphic, highlighting important data only: temperature and weather conditions.

RainViewer is available in 90 countries, with 1000+ radar coverage and supports 32 languages. The app offers pro features such as rain data archive, single radar map, and HD radar. Users can also customize their weather by selecting the color scheme for the precipitation layer, turning on a snow display, selecting measurement units, and setting up dark mode for nighttime. The app also offers in-app premium features such as an ad-free experience, up to 10 favorite locations, and twice as fast radar map updates.

RainViewer offers instant alerts to stay notified when rain or snow is on its way. Users can also specify the radius to receive alerts for nearby precipitation. The app also offers "Material You" home screen widgets that display the weather summary, interactive weather radar map, hourly or daily forecast, and minute-by-minute rain intensity forecast. The widgets are easily customizable, resizable, and perfectly match the Android home screen. They also support Dynamic Color theming and can be transparent or semi-transparent.

Overall, RainViewer is a comprehensive weather app that offers a range of features to help users plan their day ahead and stay informed about the weather in their area.