Chordio
7.5#3 in chord finder software$14.99 one-timeFree planiOSmacOS
VisitChordio vs Open—Shape
Open—Shape
6.8#8 in chord finder software$9.99 one-timeFree planiOSWeb
VisitWhat both publish
| Fact | Chordio | Open—Shape |
|---|---|---|
| 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. |
Chordio plans
- FreeFree
- Free downloadFree
- Full Unlock$14.99, paid once
- Content Packs—
Open—Shape plans
- FreeFree
- Pro$9.99, paid once
Pick Chordio if…
Chordio suits producers, composers, teachers and learners who want music theory tools alongside composition and sheet music features. It is for Apple-platform users; there is no Android app.
Pick Open—Shape if…
Open—Shape suits guitar players who want to explore chord voicings, work in alternate tunings, or build progressions. The free plan covers built-in tunings and up to three saved progressions; Pro is for unlimited custom tunings and saves.