I've got to say that is a fast frog, even without the speed boost. It's a well-made simple endless runner with that one power-up. It's clearly a good power-up, since not only you get faster, you also get an autopilot. Without the autopilot, it could have been a bit different story. Not a difficult game in the normal mode, you mostly lose when you have a brief lapse in concentration. In the hard mode, you get more difficult jumps, so you actually have to plan how and where you jump.
I'd like to invite your game to our contest, the Game Development World Championship!