Instant Grammar vs ProWritingAid
| Instant Grammar | ProWritingAid | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | $10/mo |
| Open source | No | No |
| Platforms | Windows | extension |
| Free plan | Yes | Yes |
| Desktop app | Yes | Yes |
| Style suggestions | Yes | Yes |
| Paid from | — | $550/user/mo |
| Browser extension | — | Yes |
| Mobile app | — | No |
| Languages supported | — | 1 |
Both are listed in Best Grammar Checkers. On Samsung Mobile US Press, ProWritingAid scores higher on our published basis.