Nice app that drives the flash LED in various modes. The app has 3 functions. SOS, which is exactly this function. A variable strobe light. (I use it to freeze not too fast rotational motion) A variable intensity torch with a 'push&hold to Illuminate' function. The push button stays lit, and the phone is prevented from entering the sleep mode. When on charger, the display functions as a night light with immediate access to a torch. Very useful! (I use this particularly in hotels when the room arrangement is unfamiliar in order to prevent broken toes at night :-( )
