Settings
Your guitar
Connect an input to get scored on what you play. A guitar through an audio interface gives the cleanest read; a microphone works too.
Your data
Everything lives in this browser. Back up to move it to another machine or browser — nothing is uploaded anywhere.
Or a single file, by hand. Same data, except that recordings lose their audio — a JSON file cannot carry it.
Diagnostics
Captures what the app decided and what it heard — onsets, scoring, which exercise was built and where its notes landed. Useful for a fault that only happens sometimes: leave it on, practise until it happens, then download the file.
It stays on this device until you download it, and nothing is sent anywhere. Recording does write on every note, so switch it off when you are done.
Build 0f318f6 — included in the file, so a log always says which version produced it.