Duden-Mentor vs Harper
| Duden-Mentor | Harper | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | €2.99/mo | Free |
| Platforms | extension, macOS, Web, Windows | Android, api, extension, iOS, Linux, macOS, Web, Windows |
| Free plan | Yes | Yes |
| Browser extension | Yes | Yes |
| Desktop app | No | Yes |
| Mobile app | No | |
| Style suggestions | Yes | Yes |
| Languages supported | 1 |
Listed together in Best Grammar Checkers