Music Key Wheel

Music Key Wheel is a visual aid for music keys. Starting at the arrows labelled "Maj(or)" or "min(or)", every note in the major or minor scale can be determined by following the whole-step and half-step markings. In the app, the inner circle rotates to allow selecting a specific starting note.
The app can be found on itch.io, with HTML5, Windows, and Linux binaries available.
The wheel graphic was made with Inkscape, and the app was made with the Godot Engine.