Music theory you can use at the instrument
Barre None is an independent, local-first guitar toolkit for learning a key, finding a playable chord shape, choosing a capo and carrying that work into practice or a show.
How the answers are made
Key, scale and chord spelling comes from deterministic music-theory rules. Chord diagrams are generated from each tuning, then ordered by practical factors including fret span, finger count, muted strings and distance from the nut. Capo recommendations compare the resulting shapes for every chord in the selected key.
Generated pages show their notes, intervals, shapes and related keys in the page itself. They do not hide the answer behind an account, and the interactive tools let a player check the result in context.
Scope and editorial standards
Barre None publishes original explanations, exercises and program material. It does not publish a licensed song, lyric, tablature or recording catalog. User-provided charts and rehearsal media stay private unless that user deliberately shares them with a workspace.
Musical input is untrusted and may be incomplete. When the engine cannot parse a chord or produce a supported shape, the interface says so instead of inventing an answer. The project tests its theory rules, approved common fingerings, static search pages and offline behavior as part of every release.
Local first by design
The core tools work without an account. Saved work starts in this browser, can be backed up manually and remains useful offline after installation. Optional account services add private sync and collaboration without turning the browser app into a server-dependent shell.