OtoTheory vs Scaler 3
| OtoTheory | Scaler 3 | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | Yes |
| Paid from | Free | |
| Platforms | iOS, Web | iOS, macOS, Windows |
| Free plan | Yes | No |
| Paid from | 5.99 /mo | |
| Reverse chord lookup | Yes | Yes |
| Progression generator | Yes | Yes |
| Voicing explorer | Yes | Yes |
| Supported instruments | guitar, bass, keyboard | guitar |
| Chord chart export | Yes | |
| Mobile apps | ios | ios |
| Chord audio playback | Yes | Yes |
Listed together in Best Chord Finder Software