Version 2.0

- Menus and buttons are redefined and rearranged.

- Customized tuning system is saved internally.

- User can form a chord and test the sound.

- Display color can be changed.

- Display language can be edited.

Version 2.1

- Add locked tone tuning.

- Threshold level is adjustable.

(see "Help" for details)

Version 2.1.1 minor bug fixed.

Version 2.1.2 minor bug fixed.