- Fixed broken layout on settings and loading screen

- Added a tuner function
- Corresponding to the notch
- Improved pitch analysis accuracy
- Expanded the analysis range in the bass direction to C1
- Extend the recording time to 5 minutes
- Fixed bugs

- The scale other than C major can be set
- Added a setting of the color related to each note

- Fixed bug which reacts to noise
- Improved screen indication smoothly
- Added a new option to disable auto scrolling
- Extended time which can be recorded to 3 minutes

- Added the recording and playback function
- Added save/load function
- Improved the accuracy of analysis of pitch
- Added the settings screen
- Added new option to indicate a semitone
- Added new option to calibrate the A4 frequency