Measure your strength! Use the phone's sensors to calculate the power of your shot. How many Newstons force can you get? Practiced boxing or martial arts? Monitor your performance and your development, improve your technique. Use it to improve your swing, or compete with friends. Save your record to show off your power.Set your weight, hold your phone and hit hard in any direction, through physics and a mathematical formula discover your true strength. It takes into account your weight to give a real measurement. Use this App carefully and at your own risk, the phone may fly off or you could hit against something if you do not have enough space. Have fun!