Music theory that sticks.

Spaced repetition brings each question back right before you'd forget it, so what you learn stays learned.

Notes and degrees, not fingerings. What you learn transfers to guitar, piano, voice — anything.

Every topic opens with a short lesson, and any term in a question can be tapped for a plain definition.

A short, plain-language lesson introduces each topic before a single question is asked.

Tap answers on a 12-note grid. Correct notes lock in green — no self-grading, no guesswork.

Each question returns on its own schedule — sooner if you struggled, later as it becomes automatic.