This application can measure the fist speed.
Do you want to try your fist Speed?
3.iPhone/iPod touch is grasped. Thumb about the same as “start” button of this application at position
4.You can be concerned in principal attitude of boxing.
5.With the thumb after pushing “the start” button, Knocks out the fist.
6.Knocks out the fist speed is displayed.
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