Best AI Grammar Checkers in 2026
Updated
AI grammar checkers can help you review writing across different apps, documents, and team workflows. Compared on AI rewrite suggestions, supported languages, custom rules, and document integrations, the entries also identify browser extensions and desktop apps. LanguageTool, GrammarCheck.ai, and Linguix are among the options to weigh, alongside Outwrite and Sapling. Consider where you write most, which languages and editing preferences you need, and whether colleagues will share the tool through team administration features. Free-plan availability and paid-from pricing provide further comparison points as you consider how each option fits your writing routine.
21 of 21 with known pricing have a free tier;0 apps show full bars: free, open, on most devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | HarperWeb · Windows · Mac · Linux · Android · iPhone · API · Extension | Three bars | 6 of 6 | Free | 6.7 | ||
| 2 | QuillBotWeb · Windows · Mac · Android · iPhone · Extension | Three bars | 5 of 6 | Free | 6.7 | ||
| 3 | GrammarCheck.aiWeb · Linux · Android · iPhone · API · Extension | Three bars | 4 of 6 | $0.21/mo | 6.6 | ||
| 4 | LanguageToolWindows · Mac · iPhone · Extension | Three bars | 3 of 6 | Free | 6.6 | ||
| 5 | GrammalecteWindows · Mac · Linux · Extension | Three bars | 3 of 6 | Free | 6.5 | ||
| 6 | LinguixWeb · Android · iPhone · API · Extension | Three bars | 3 of 6 | $5/mo | 6.5 | ||
| 7 | OutwriteWeb · Windows · Mac · API · Extension | Three bars | 3 of 6 | $7.95/mo | 6.5 | ||
| 8 | SaplingWeb · Windows · Self-hosted · API · Extension | Two bars | 2 of 6 | $5/mo | 6.5 | ||
| 9 | ScribensWeb · Android · iPhone · Extension | Three bars | 3 of 6 | €499.17/mo | 6.5 | ||
| 10 | TrinkaWeb · Windows · Mac · Self-hosted · API · Extension | Three bars | 3 of 6 | Free | 6.5 | ||
| 11 | Wordvice AIWeb · Windows · Mac · Extension | Three bars | 3 of 6 | $0.70/mo | 6.5 | ||
| 12 | WritefullWeb · Windows · Mac · Extension | Three bars | 3 of 6 | Free | 6.5 | ||
| 13 | GrammarlyAndroid · iPhone | Two bars | 2 of 6 | $12/mo | 6.4 | ||
| 14 | GrammarCheck.netWeb · Extension | Two bars | 1 of 6 | Free | 6.3 | ||
| 15 | PoliMac · Extension | Two bars | 1 of 6 | Free | 6.3 | ||
| 16 | ProWritingAidExtension | Two bars | 0 of 6 | $10/mo | 6.3 | ||
| 17 | Slick WriteWeb · Extension | Two bars | 1 of 6 | Free | 6.3 | ||
| 18 | SpellBoyWeb | Two bars | 1 of 6 | Free | 6.3 | ||
| 19 | TyplxiPhone · Self-hosted · Extension | Two bars | 1 of 6 | Free | 6.3 | ||
| 20 | Write WiseAndroid | Two bars | 1 of 6 | Free | 6.3 | ||
| 21 | CorrectlyExtension | Two bars | 0 of 6 | Free | 6.2 | ||
| 22 | GingerWeb · Windows · Mac · Android · iPhone · Self-hosted · API · Extension | Two bars | 5 of 6 | $0.42/mo | 5.7 | ||
| 23 | Microsoft EditorWeb · Windows · Mac · Extension | Two bars | 3 of 6 | 5.6 | |||
| 24 | ORFOWeb · Windows · Mac | Two bars | 3 of 6 | 5.6 | |||
| 25 | WordeepWeb · Mac · Android · iPhone · Extension | Two bars | 4 of 6 | $8.25/mo | 5.6 |
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Supported languages | Browser extension |
|---|---|---|---|---|---|---|---|---|
| 1 | Harper | 6.7 | Free plan | Free | Yes | Yes | ||
| 2 | QuillBot | 6.7 | Free plan | Yes | ||||
| 3 | GrammarCheck.ai | 6.6 | Free plan | $0.21/mo | Yes | Yes | ||
| 4 | LanguageTool | 6.6 | Free plan | Free | Yes | Yes | ||
| 5 | Grammalecte | 6.5 | Free plan | Free | Yes | Yes | ||
| 6 | Linguix | 6.5 | Free plan | $5/mo | Yes | Yes | ||
| 7 | Outwrite | 6.5 | Free plan | $7.95/mo | Yes | 7.95 /user/mo | Yes | |
| 8 | Sapling | 6.5 | Free plan | $5/mo | Yes | 12 /user/mo | Yes | |
| 9 | Scribens | 6.5 | Free plan | €499.17/mo | Yes | 40 languages | Yes | |
| 10 | Trinka | 6.5 | Free plan | Yes | Yes | |||
| 11 | Wordvice AI | 6.5 | Free plan | $0.70/mo | Yes | Yes | ||
| 12 | Writefull | 6.5 | Free plan | Yes | Yes | |||
| 13 | Grammarly | 6.4 | Free plan | $12/mo | Yes | 12 /user/mo | Yes | |
| 14 | GrammarCheck.net | 6.3 | Free plan | Free | Yes | Yes | ||
| 15 | Poli | 6.3 | Free plan | Free | Yes | Yes | ||
| 16 | ProWritingAid | 6.3 | Free plan | $10/mo | Yes | Yes | ||
| 17 | Slick Write | 6.3 | Free plan | Free | Yes | Yes | ||
| 18 | SpellBoy | 6.3 | Free plan | Free | Yes | 13 languages | ||
| 19 | Typlx | 6.3 | Free plan | Free | Yes | Yes | ||
| 20 | Write Wise | 6.3 | Free plan | Free | Yes | |||
| 21 | Correctly | 6.2 | Free plan | Free | 1 languages | Yes | ||
| 22 | Ginger | 5.7 | $0.42/mo | Yes | Yes | |||
| 23 | Microsoft Editor | 5.6 | Yes | Yes | ||||
| 24 | ORFO | 5.6 | Yes | |||||
| 25 | Wordeep | 5.6 | $8.25/mo | No | Yes |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.