Syma S107/S107G Helicopter Rem APP
This remote uses the IR emitter on the device to control the helicopter. If your phone does not have an IR, this app will not work. So far, this remote has been tested on the Syma S107 and may or may not work with the other helicopters. However, there are plans to update this app so that it can be compatible with separate IR emitters and that it can work with other helicopters.
A guide to using this remote can be found in the information portion of the app.