You don't have to sign up to listen to our Live Stations, but we do ask for registration to access certain features. By registering, you will be able to sync your favorite saved stations across the Web, your iPad and mobile apps. Registration is also required to listen to Custom Stations and to view the stations and songs you’re friends like. Signing up with iHeartRadio is free and easy – you can do so using your email address, or through Facebook.