This app can control sound pitch.
it has equal temperament mode and pure temperament mode.
you can change modes, and feel the difference of them .
This app has metronome function too.
you can change volumes of 4th,8th,16th note and 8th-note triplet one by one.
We hope you enjoy your practice of music more and its good time of your life...
Thank you.
Yujiro from japan.