HarmonyBuilder vs OtoTheory
| HarmonyBuilder | OtoTheory | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | Yes | Yes |
| Paid from | $14/mo | Free |
| Open source | No | No |
| Platforms | Linux, macOS, Windows | iOS, Web |
| Free plan | No | Yes |
| Reverse chord lookup | No | Yes |
| Progression generator | Yes | Yes |
| Voicing explorer | Yes | Yes |
| Chord chart export | Yes | Yes |
| Mobile apps | none | ios |
| Chord audio playback | Yes | Yes |
| Paid from | — | 5.99 /mo |
| Supported instruments | — | guitar, bass, keyboard |
Both are listed in Best Chord Finder Software. On Specifiction, OtoTheory scores higher on our published basis.