Fast Handz, gives the user a score based on how quick they can throw their punch, The phone is held firmly, when a beep sound is made the user has a few seconds to react, The Test lasts 30 seconds In which your best score carries over. The punch score is calculated through a few variables(acceleration,reaction time, distance), You will receive a score to which then you can compare with others using the game centre to see how well you measure up to them. In order for this to work, the users will have to recommend the app to others so you can see who has the fastest hands, if not you can compare your hand speed to mine :) good luck....