ProWritingAid vs Readability Formulas
| ProWritingAid | Readability Formulas | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $10/mo | Free |
| Open source | No | No |
| Platforms | extension | extension, macOS, Web, Windows |
| Free plan | Yes | Yes |
| Paid from | 10 /mo | — |
| Browser extension | Yes | Yes |
| Sentence analysis | — | Yes |
| Clarity recommendations | — | Yes |
| Language support | — | english |
Both are listed in Best Readability Checkers. On Freedom251, ProWritingAid scores higher on our published basis.