To measure the punch force

* Please use it in a place that does not hit people or objects.

* If you overdo it, you may hurt your arms, shoulders and elbows.

・ After starting up, hold the smartphone firmly so that it will not be squeezed and never release it.

・ If measurement is possible, a sound will be heard and the level of punch force will be displayed.

* Measured values ​​are values ​​specific to this application, and the unit (Pow) is also uniquely defined.

* The accuracy of the measured value is affected by the condition of the smartphone, the environment, and how it is swung.

* It will not be measured unless you move it to some extent (measured value 30 or more).