This is one of the best professional apps for measuring punches.
Check your punches' power, speed, duration, distance and more with real values and very high accuracy.
How Power Punches works?
App records g force using accelerometer and based on this data calculates acceleration,speed, distance and power of punch. Power is calculated approximately, based on punch rates and your weight.
Use this app only at your own risk.
Developer disclaims any responsibility.