For iPhone users and hobbies with a remote control or R/C, you should try this one. WiRC is an accessory for the iPhone that can be used to control R/C with various models of cars, robot, trucks, boats and other(compatible). The WiRC connection kit made and developed by Dension, Interestingly, there is a camera as your eyes while driving, making it easier for us to monitor.
Connection kit that will control the servo standard model and ESC, the application is already available in the App Store, and free. How to use it also easy, you can use the joystick on the screen or by moving to the left and right, utilize the functionality on the iPhone accelerometer.
Reportedly for the Android operating system will also be available, so if your Android device users will also be able to enjoy it. If you are interested you can order it through this site.