This APP is designed to work with our Boxing Dynamometer Pad which is to test punch power, punch speed and calculate calorie burnt. The user can set bodyweight, power unit and even language so as to meet very personalized requirement. There are 3 PLAY MODES to play: Free Punch, Punch Power and Punch Speed, while in Punch Speed Mode there are 3 time options to play. Where Boxing has fun! Go on to enjoy it!