Input your weight , push start button and punch holding your phone .
Application calculate your
punching power using built-in accelerometer .
94% android device have build-in
accelerometer .
![30 Minute Boxing HIIT Workout with a Heavy Bag [Round 2] 2022 screenshot 1](https://i.ytimg.com/vi/yQ0dopb69ns/mqdefault.jpg)
9Apps 4.9
