An FM transmitter will do the job without an app. Just plug it in to your phone, put the transmitter to a free frequency where there's just static, and tune your radio into that frequency. Then you can just use your phone to play music and it'll come out the car's speakers. Some of them are bluetooth and plug into your car's cigarette lighter, and some are AUX and some can take batteries. They're around £15. Sound quality is acceptable, I don't know if I've got a dodgy one but mine constantly crackles and there's always a high pitched whine, but they do work.
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2004 Rover 75 Saloon - Connoisseur S.E - 2.0 Diesel CDTi - Platinum Gold - Auto.
1991 Mercedes 190E 1.8 (Nico) / 1991 Yamaha SR125 (David) This vehicle (Nigel) was born Wednesday, 15th September 2004 @ 08:14:39 and was the 103,810th 75 to run off the production line, out of 112,381 - This vehicle was the 3,096th 75 CDT Connoisseur SE (135) to be made out of 4,744 - This vehicle was the 303rd 75 in Platinum Gold (code: MCN) to be made out of 1,685 Platinum Gold 75s
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