Best Grammar Checkers in 2026
Updated
In short: Sapling is ranked #1 of 88 as of 5 October 2026, ahead of Trinka and Linguix. The best-ranked option with a free plan is Trinka. The lowest first paid tier on this page is Ginger at $0.42/mo.
Writing feedback can be useful at different stages, from checking language to reviewing tone and style. Compared on style suggestions and tone detection, these grammar checkers also indicate where you can use them: browser extensions, desktop apps, or mobile apps. Check supported languages, free-plan availability, and paid-from pricing alongside those workflow details. Sapling, Trinka, and TextGears are among the entries shown, with Ginger and Outwrite also included. Consider the languages you write in, the devices you use, and whether you want help with phrasing as well as grammar when weighing the listed options.
88 grammar checkers ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Grammar checkers, one module each. A lit port is something its maker publishes; 7 of the 25 on this page have a public API.
- 01 Sapling API yesOSS not on recordFREE yesDOCS 8.7$5/mo
- 02 Trinka API yesOSS not on recordFREE yesDOCS 8.7Free
- 03 Linguix API yesOSS not on recordFREE yesDOCS 8.5$5/mo
- 04 TextGears API yesOSS not on recordFREE yesDOCS 8.5$2.48/mo
- 05 Ginger API yesOSS not on recordFREE not on recordDOCS 8.4$0.42/mo
- 06 iGrammar API yesOSS not on recordFREE yesDOCS 8.4$10/mo
- 07 Outwrite API yesOSS not on recordFREE yesDOCS 7.7$7.95/mo
- 08 LanguageTool API not on recordOSS not on recordFREE yesDOCS 7.6Free
- 09 Grammarly API not on recordOSS not on recordFREE yesDOCS 7.5$12/mo
- 10 ProWritingAid API not on recordOSS not on recordFREE yesDOCS 7.5$10/mo
- 11 Wordvice AI API not on recordOSS not on recordFREE yesDOCS 7.3$0.70/mo
- 12 Microsoft Editor API not on recordOSS not on recordFREE not on recordDOCS 7.0
- 13 MerciApp API not on recordOSS not on recordFREE yesDOCS 7.0€12/mo
- 14 Rechtschreibprüfung24 API not on recordOSS not on recordFREE yesDOCS 6.9Free
- 15 Grammar Guru API not on recordOSS not on recordFREE yesDOCS 6.9$1/mo
- 16 Harper API not on recordOSS not on recordFREE yesDOCS 6.8Free
- 17 GemType API not on recordOSS not on recordFREE yesDOCS 6.8Free
- 18 Scribens API not on recordOSS not on recordFREE not on recordDOCS 6.7€4.99/mo
- 19 Virtual Writing Tutor API not on recordOSS not on recordFREE yesDOCS 6.7$3/mo
- 20 LexiCheck API not on recordOSS not on recordFREE yesDOCS 6.7$2/mo
- 21 Scribbr Grammar Checker API not on recordOSS not on recordFREE not on recordDOCS 6.6
- 22 Sentence Checker API not on recordOSS not on recordFREE yesDOCS 6.6Free
- 23 GrammarCheck.ai API not on recordOSS not on recordFREE yesDOCS 6.6$4/mo
- 24 Antidote API not on recordOSS not on recordFREE not on recordDOCS 6.5€4/mo
- 25 Cordial API not on recordOSS not on recordFREE not on recordDOCS 6.5
Compare all 25 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Browser extension | Desktop app |
|---|---|---|---|---|---|---|---|---|
| 1 | Sapling | 8.7 | Free plan | $5/mo | Yes | $12/user/mo | Yes | Yes |
| 2 | Trinka | 8.7 | Free plan | — | Yes | — | Yes | Yes |
| 3 | Linguix | 8.5 | Free plan | $5/mo | Yes | — | Yes | — |
| 4 | TextGears | 8.5 | Free plan | $2.48/mo | Yes | — | — | — |
| 5 | Ginger | 8.4 | No | $0.42/mo | Yes | — | Yes | Yes |
| 6 | iGrammar | 8.4 | Free plan | $10/mo | Yes | — | Yes | Yes |
| 7 | Outwrite | 7.7 | Free plan | $7.95/mo | Yes | $7.95/user/mo | Yes | No |
| 8 | LanguageTool | 7.6 | Free plan | Free | Yes | Free | Yes | Yes |
| 9 | Grammarly | 7.5 | Free plan | $12/mo | Yes | $12/user/mo | Yes | Yes |
| 10 | ProWritingAid | 7.5 | Free plan | $10/mo | Yes | $550/user/mo | Yes | Yes |
| 11 | Wordvice AI | 7.3 | Free plan | $0.70/mo | Yes | — | Yes | — |
| 12 | Microsoft Editor | 7.0 | No | — | Yes | — | Yes | No |
| 13 | MerciApp | 7.0 | Free plan | €12/mo | Yes | — | Yes | Yes |
| 14 | Rechtschreibprüfung24 | 6.9 | Free plan | — | Yes | — | Yes | — |
| 15 | Grammar Guru | 6.9 | Free plan | $1/mo | Yes | — | Yes | Yes |
| 16 | Harper | 6.8 | Free plan | Free | Yes | — | Yes | Yes |
| 17 | GemType | 6.8 | Free plan | Free | Yes | — | Yes | Yes |
| 18 | Scribens | 6.7 | No | €4.99/mo | Yes | — | Yes | Yes |
| 19 | Virtual Writing Tutor | 6.7 | Free plan | $3/mo | Yes | — | — | — |
| 20 | LexiCheck | 6.7 | Free plan | $2/mo | Yes | — | — | — |
| 21 | Scribbr Grammar Checker | 6.6 | No | — | Yes | — | Yes | — |
| 22 | Sentence Checker | 6.6 | Free plan | Free | Yes | — | Yes | — |
| 23 | GrammarCheck.ai | 6.6 | Free plan | $4/mo | Yes | — | Yes | Yes |
| 24 | Antidote | 6.5 | No | €4/mo | No | — | Yes | Yes |
| 25 | Cordial | 6.5 | No | — | Yes | — | Yes | Yes |
Is your platform on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which grammar checker is ranked first on Inferse?
Sapling is ranked #1 of 88 with a score of 8.7. Trinka is second and Linguix third.
How many of these have a free plan?
19 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Ginger has the lowest first paid tier we found: $0.42/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.