Try TuneIn Radio Pro, great reviews in Itunes.
A word or two to the wise.
Radio Streaming is a great idea.
But ! Keep an eye on your usage counter
Don't forget that your bandwidth is combination of bidirectional data flow, there is always some return for that incoming data.
Typical radio stations can run anywhere between 32 kbps and 128 kbps. If you are on WiFi, this discussion is irrelevant. a quick calculation.
32Kbps = 4KB/s = 12MB/hour
64Kbps = 8KB/s = 23MB/hour
128Kbps = 16KB/s = 57MB/hour
Do some research, Google " data usage for radio streaming ".
Bandwidth conversion calculator
Broadband Download Usage Guide | Business Broadband | Business | Zen Internet
Bandwidth conversion calculator | web.forret.com
A lot of people got caught with there pants down and almost died when there bill came in, I can still hear echoes in the wind " there must be a mistake, I didn't use this amount of data, there must be a problem with your system, it's wrong etc... ".
I will add, everything is turned on when you get a new iPhone, location services, push notifications, fetch new data automatically, push mail, third-party applications, Wi-Fi, Bluetooth, brightness, EQ, game center, turn everything off
, do some research, learn what App uses Bandwidth.
Example, a simple phone call uses both time on your plan, and Bandwidth.
Google " Tips to Extend iPhone Battery Life ", it also applies to saving on Bandwidth.
PS : Keep an eye on the battery meter