Need help for iphone Radio Application

[nvnt]

Hi,

I am new to iphone development. I need your help. My requirement is to make a iphone radio frequency tuner which the user can revolve and set according to their mood.

Here is the better picture:

moodmusicwsound.mkv - YouTube

I dont know how to make such a wheel. Open GL can be used or not??

Any example::hint::suggestion will be of help. Your help can save my job.

Thanks in advance.