Flat vs music21
| Flat | music21 | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Android, iOS, macOS, Web, Windows | Web, Windows, macOS, Linux |
| Free plan | Yes | Yes |
| Paid from | $9.99/mo | — |
| Deployment | both | both |
| MusicXML support | Yes | Yes |
| MIDI support | Yes | Yes |
| Parts extraction | Yes | Yes |
| Tablature support | Yes | Yes |
| Collaboration features | Yes | — |
Both are listed in Best Music Notation Software. On Inferse, Flat scores higher on our published basis.