Open—Shape vs Scaler 3
Open—Shape
openshape.app
Scaler 3
scalermusic.comSide by side
| Figure | Open—Shape | Scaler 3 |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | — | Yes |
| iOS | Yes | Yes |
| Plans published | 2 | 1 |
| Spec score · Chord Finder Software | 7.7 (#11) | 7.7 (#12) |
| Privacy | 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. | The privacy policy says Scaler Music takes reasonable steps to comply with Australia’s Privacy Act and Australian Privacy Principles, and with the GDPR where applicable. |
| Support | Support is by email, and the site says replies usually arrive within a day or two. | Support is available through FAQs, a community forum, support chat, and support tickets. |
Plans
In their own words
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.