Learn, understand, and make music

Start with what you want to do.

Practice guitar and music theory, understand what a tab actually says, explore how the instrument fits together, or build something you can hear. One evidence-gated engine owns every calculation.

Practice something Start quickly by topic, revisit weak areas, customize a session, or learn from your own tab. Tabs See the parser's evidence, compare versions, and inspect exact pitches without treating spacing as rhythm. Explore the guitar Map the fretboard, analyze chord shapes, find voicings, and connect scales with harmony. Create and hear music Build exact rhythm, generate or edit progressions, choose guitar voicings, and play a private loop.

Browse every tool

The trust contract

The app tells you what it knows—and where that knowledge ends.

Evidence before confidence

Questions are asked only when the answer can be supported. Ambiguity produces alternatives or a refusal, not a guess.

One music engine

The same Python parser, theory calculations, exact rhythm model, and grader serve practice and every tool.

Private by construction

Tabs and musical drafts stay in bounded private memory. There are no accounts, analytics, third-party uploads, or telemetry.