TuneIn Radio

TuneIN Radio is one of the best free radio apps out there, offering over 50.000 stations from around the world, whether local, digital. podcasts or news.
You can choose channels by location, language, sports, talk, music (songs, artists).
If you want to use it as an alarm clock or sleep timer, TuneIn Radio works great for that too.
It also lets you save your preferred stations and songs to your presets.
When comes to audio, everything is clean and of high quality.

Slacker Radio

Slacker Radio comes packed with a huge music library and 150+ stations in categories such as comedy, news, blues, country etc.
With your favorite songs and artists you can create your own radio channels to listen to.
Furthermore with Slacker Radio you will get artist bios, album info and partial lyrics for the songs.
Unlike the Pandora app, there is no monthly limit, but if you skip more than 6 songs per hour you will get audio advertisements.
Its intuitive Interface, top-notch audio quality, large music library makes it  great over many other radio apps.

iHeartRadio

With this app you will get more than 750 local and digital radio channels from various U.S cities. It has a beautiful interface with many personalization options, like setting your favorite stations or buying songs via iTunes. Another great feature is the radio preview, if you press and hold the station logo you can get a preview of what is playing. Channels can be found by music genre, location or name and can be shared via email and other social sites (Facebook, Twitter). Overall, this is another well made free radio app to stream stations, listen to talks, music and view videos on your mobile device.