Product features

Explore chords, scales, and intervals on a responsive neck diagram. Tap any note for pitch, interval, and theory context.

Search and favorite notes, intervals, chords, and scales from the same catalog that powers Sonid — with difficulty filters and tonic controls.

Switch between curated guitar voicings from Sonid and a full-neck view that highlights every chord tone across the fretboard.

Color each pitch with the Sonid palette — the same hues used on piano keys and chord diagrams across sonid.app.

Show note names, interval abbreviations, or fret numbers on the neck so you can study the way you think.

Read theory articles pulled from Sonid for the chord or scale you are viewing, without leaving the app.

Open any chord or scale from a link — on the web or straight into Capo on iOS — with locale-aware URLs.

Match your device or pick a fixed theme. Capo respects your display preference everywhere in the app.

Unlock drop D, DADGAD, open tunings, 7-string layouts, and instrument-specific presets with Capo Plus.

Capo Plus removes banner ads so you can stay focused on the neck during study sessions.