Best Grammar Checkers in 2026
Updated
In short: MerciApp is ranked #1 of 88 as of 7 October 2026, ahead of LanguageTool and Sapling. The best-ranked option with a free plan is LanguageTool. The lowest first paid tier on this page is GrammarCheck.ai at $0.21/mo.
Grammar checkers vary in where they can be used and the kinds of feedback they provide. Compared on browser extensions, desktop apps and mobile apps, the entries can help you assess access across your writing routine; style suggestions and tone detection indicate other review capabilities to compare. Languages supported, free-plan availability and paid-from pricing add further points to consider. LanguageTool, Sapling and Grammarly are among the listed options, along with Ginger and Trinka. Think about the languages you write in, the devices you use, and whether style or tone feedback is useful alongside grammar review. Use the listed details to weigh what fits your drafting and editing needs.
88 grammar checkers ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Browser extension | Desktop app |
|---|---|---|---|---|---|---|---|---|
| 1 | MerciApp | 9.1 | Free plan | €12/mo | Yes | — | Yes | Yes |
| 2 | LanguageTool | 8.9 | Free plan | Free | Yes | Free | Yes | Yes |
| 3 | Sapling | 8.8 | Free plan | $5/mo | Yes | $12/user/mo | Yes | Yes |
| 4 | iGrammar | 8.7 | Free plan | $10/mo | Yes | — | Yes | Yes |
| 5 | Grammarly | 8.6 | Free plan | $12/mo | Yes | $12/user/mo | Yes | Yes |
| 6 | Ginger | 8.5 | No | $0.42/mo | Yes | — | Yes | Yes |
| 7 | Trinka | 8.5 | Free plan | — | Yes | — | Yes | Yes |
| 8 | Wordvice AI | 8.5 | Free plan | $0.70/mo | Yes | — | Yes | — |
| 9 | Grammar Guru | 8.5 | Free plan | $1/mo | Yes | — | Yes | Yes |
| 10 | Harper | 8.5 | Free plan | Free | Yes | — | Yes | Yes |
| 11 | Linguix | 8.4 | Free plan | $5/mo | Yes | — | Yes | — |
| 12 | ProWritingAid | 8.3 | Free plan | $10/mo | Yes | $550/user/mo | Yes | Yes |
| 13 | Scribens | 8.2 | No | €4.99/mo | Yes | — | Yes | Yes |
| 14 | Antidote | 8.2 | No | €4/mo | No | — | Yes | Yes |
| 15 | GrammarCheck.ai | 8.2 | Free plan | $0.21/mo | Yes | — | Yes | Yes |
| 16 | GemType | 8.1 | Free plan | Free | Yes | — | Yes | Yes |
| 17 | TextGears | 8.0 | Free plan | $2.48/mo | Yes | — | — | — |
| 18 | WhiteSmoke | 8.0 | No | $0.83/mo | Yes | — | Yes | Yes |
| 19 | Outwrite | 8.0 | Free plan | $7.95/mo | Yes | $7.95/user/mo | Yes | No |
| 20 | Microsoft Editor | 7.7 | No | — | Yes | — | Yes | No |
| 21 | Rechtschreibprüfung24 | 7.6 | Free plan | — | Yes | — | Yes | — |
| 22 | CorrectEnglish | 7.6 | Free plan | $6.67/mo | Yes | — | Yes | — |
| 23 | Wordeep | 7.6 | No | $8.25/mo | No | — | Yes | Yes |
| 24 | Duden-Mentor | 7.5 | No | — | Yes | — | Yes | No |
| 25 | Virtual Writing Tutor | 7.5 | Free plan | $3/mo | Yes | — | — | — |
Is your tool 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 Specifiction?
MerciApp is ranked #1 of 88 with a score of 9.1. LanguageTool is second and Sapling third.
How many of these have a free plan?
18 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, GrammarCheck.ai has the lowest first paid tier we found: $0.21/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.