Radio USA is a free Android app designed by Radioworld FM that enables users to listen to over 55,000 American FM radio stations and internet radios for free. With an easy-to-use and fast interface, this app provides the best listening experience for sports, news, music, and more. It has several features including Android Auto and Chromecast compatibility, an alarm function, automatic shutdown, and a magnifying glass to search for a radio. Users can also share live radios with friends via social networks, emails, or sms and save their favorite radios.

The app allows users to listen to the radio while using other applications or in standby mode of their smartphone. With Radio USA, users can discover new radio stations, receive a call while using the application and even listen to FM radio abroad. The app is ad-supported, but users can get an ad-free version displayed via the app menu. The app requires a 3G, 4G or WiFi internet connection to work and is available for free on the Google Play Store.