Readability Formulas vs textstat
| Readability Formulas | textstat | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | extension, macOS, Web, Windows | Linux, self-hosted |
| Free plan | Yes | — |
| Grade-level analysis | — | Yes |
| Plain-language rewrites | — | No |
| Accessibility guidance | — | No |
| Input formats | — | text |
Both are listed in Best AI Readability Checkers. On Freedom251, Readability Formulas scores higher on our published basis.