Chordio vs Open—Shape
Chordio
chordio.co.ukOpen—Shape
openshape.appSide by side
| Figure | Chordio | Open—Shape |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| macOS | Yes | — |
| iOS | Yes | Yes |
| Plans published | 4 | 2 |
| Spec score · Chord Finder Software | 8.9 (#2) | 7.7 (#11) |
| Privacy | Apple lists the developer's stated privacy practice as no data collected. | The privacy policy says custom tunings and progressions are stored in browser local storage, and tuner audio is analyzed in the browser and not recorded or transmitted. |
| Support | Support is offered through a contact form, email, FAQ and video tutorials. | Support is by email, and the site says replies usually arrive within a day or two. |
| What it does | Chordio is an interactive composition and music-theory app for building progressions, exploring scales and modes, practising sheet music and learning theory. | Open—Shape is a guitar chord and progression tool that finds playable chord voicings across the fretboard in different tunings. |
Plans
Chordio
- FreeFree
- Free downloadFree
- Full Unlock$14.99, paid once
- Content PacksPrice not published
In their own words
Chordio
Chordio is a music composition and theory app for iOS and macOS, with workspaces for composition, scales, modes, sheet music, music theory and lessons. Its library includes more than 40 scales. Connect a USB, MIDI or Bluetooth MIDI keyboard and it identifies chords in real time, naming them on the grand staff. Harmony Explorer finds matching scales and suggests diatonic and borrowed chords, secondary dominants and tritone substitutions. Progressions can be dragged into Logic Pro, Ableton Live, FL Studio and other DAWs as MIDI; MIDI chords can also be imported for re-harmonization. Sheet Music includes tempo adjustment, looping, separate-hand practice, transposition and PDF printing. Lesson Packs let users play pieces in any key and at any tempo. The free download includes built-in sounds, an on-screen keyboard and every workspace. Full Unlock costs $14.99 as a one-time purchase and includes Mac, iPad and Vision Pro, plus lifetime updates. The iPhone version is purchased separately, and there is no Android app.
Open—Shape
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.