chords·lol vs Open—Shape

chords·lol is a free browser platform for learning and referencing chords, scales, keys, progressions, and music theory. Its index contains 360 chords across 30 qualities and twelve roots, with notes, intervals, keys, and playable diagrams for guitar, piano, ukulele, bass, mandolin, and banjo. The learning library lists 107 scales, 30 keys, 30 progressions, and 26 theory guides. Nine browser tools include chord and scale finders, a transposer, ear training, a progression generator, and a metronome. The site provides 19 printable PDF charts covering chords, scales, and keys. Tools require no account or signup; the maker says there are no email gates or paywalls. Chord and scale data, audio, and PDFs may be downloaded for personal, classroom, and non-commercial use. Privacy information describes anonymous Vercel Analytics and PostHog usage data, Do Not Track support, no data sales, and no third-party advertising scripts. Terms provide no warranty of accuracy or fitness for a particular purpose.

Open—Shape helps guitarists find playable chord voicings across the fretboard, including in different tunings. Its chord engine searches for shapes, filters them by note count, and supplies difficulty labels and fingering details. Users can chain and reorder chords, play progressions, and save them. The Free plan includes the full chord engine, every voicing, 33 built-in tunings, real acoustic guitar playback, a microphone tuner, and up to three saved progressions. Pro costs $9.99, paid once, billed one-time, and adds unlimited custom tunings and saved progressions. The tuner identifies strings in alternate and custom tunings; capo settings update chord voicings and progressions. A visual Canvas board for connecting chords, tuning, and capo runs in a desktop browser. Open—Shape is available on iOS and the web, and an account is not required. Saved tunings and progressions are stored in browser local storage, with backup export and import in Settings. Its privacy policy says tuner audio is analyzed in the browser and is not recorded or transmitted.