Grooveshark Is Not Supported On The iPhone
Right now there is not a Grooveshark application for iPhones through Apple's iPhone App Store. Unfortunately at this time, Apple is unwilling to work with Grooveshark to approve our application. This means that iPhones are unable to download Grooveshark for iPhone unless they are jailbroken. We are sincerely sorry to be unable to offer Grooveshark to all iPhones, as we've done everything in our power to have it included in Apple's App Store.
If your iPhone is jailbroken, you are able to download the Grooveshark app. Read our blog post to find out more.