Semitone

Semitone is a tool for musicians that includes a tuner, a metronome, and a piano.

The design is as simple and easy-to-use as possible while implementing many useful details, such as:

• an option to set A4 pitch for alternative tunings
• the ability to manually set strong beats on the metronome
• dynamic resizing of the piano keyboard

Semitone is free, open-source software. The source code is available on GitHub under the GPLv3: https://github.com/tckmn/semitone/