FM GO! Is the first App that works with the iPhone 4s external FM receiver, developed by LINGO Limited. It is exclusive to work with iMini, the LINGO branded iPhone FM receiver dongle.FM GO! also provides you a great convenience of FM/Internet Radio (SHOUTcast.Radio)access, Youtube, Facebook, Twitter, MP3 and clock short-cut. Note: If LINGO's iMini is not connected, FM will not be activated.