Harmony Pro vs Open—Shape
| Harmony Pro | Open—Shape | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | macOS, Web, Windows | iOS, Web |
| Free plan | Yes | Yes |
| Reverse chord lookup | Yes | — |
| Progression generator | Yes | Yes |
| Voicing explorer | Yes | Yes |
| Chord audio playback | Yes | Yes |
| Supported instruments | — | guitar |
| Mobile apps | — | ios |
Both are listed in Best Chord Finder Software. On The Geeks Club, Harmony Pro scores higher on our published basis.