I don't know if you have the same troubles as me. Usually, when you exercise against the app, you always have to stare at the phone while doing the action. The screen is too small, without AI interaction, you can't guarantee the accuracy and completion of the action. Later, my colleagues planted the mirror of Fett. Favorite place of fiture after departure! ! ! Using it to exercise can be done with the coach in the mirror, and you can also observe whether your movements are in place, which gives me a very good feeling ~ this feeling is not given by those apps.