Calamus Compile vs WriterDuet
| Calamus Compile | WriterDuet | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | $189/mo | Free |
| Open source | No | No |
| Platforms | Web, macOS, iOS | Web, Windows, macOS, Linux, iOS, Android |
| Free plan | No | Yes |
| Publishing tools | — | Yes |
| Real-time collaboration | — | Yes |
| Version history | — | Yes |
| Offline mode | — | Yes |
| Mobile apps | — | Yes |
| Export formats | — | extensive |
Both are listed in Best Writing Apps. On Samsung Mobile US Press, WriterDuet scores higher on our published basis.