Physics-based games have taken the App Store by storm and Cliff Jumper is another such offering. The premise is simple: Launch your skateboarder off the edge of a cliff and perform the required number of flips before hitting the ground. With simple graphics and rather shallow gameplay, it won't win any awards, but as a free time-waster aimed at a younger audience, it fits the bill.
Each level consists of a ramp where you build up speed at a cliff which you (you guessed it) jump from. You are judged on both your ability to nail the correct number of flips and on your landing. Hitting the ground with both sets of wheels is preferred, and if you land with one set of wheels before the other, you'll be downgraded accordingly.