When you practice by mounting the smartphone to saw, smartphone senses the movement of the ground saw, will tell you the advice for cutting to good. By the practice a lot, let's master saw grinder!
[Disclaimer] In saw learning, it is intended to be attached to see the basic sense of the sawing operation, we do not guarantee to the point where a skilled to. In addition, this version is a stand-alone version, cooperation, etc. and practice history management system, we have some of the functions are limited.