Best Instant Grammar Alternatives in 2026
Updated
20 apps from grammar checkers ranked against Instant Grammar on the same published basis.
- 1Instant Grammar vs LanguageTool
- 2Instant Grammar vs Grammarly
- 3Instant Grammar vs Trinka
- 4Instant Grammar vs MerciApp
- 5Instant Grammar vs Sapling
- 6Instant Grammar vs Wordvice AI
- 7Instant Grammar vs Harper
- 8Instant Grammar vs ProWritingAid
- 9Instant Grammar vs Scribbr Grammar Checker
- 10Instant Grammar vs Linguix
- 11Instant Grammar vs Duden-Mentor
- 12Instant Grammar vs iGrammar
- 13Instant Grammar vs Grammar Guru
- 14Instant Grammar vs Cordial
- 15Instant Grammar vs Rechtschreibprüfung24
- 16Instant Grammar vs TextGears
- 17Instant Grammar vs GemType
- 18Instant Grammar vs Korr
- 19Instant Grammar vs WritingTool
- 20Instant Grammar vs Lexicon
Instant Grammar alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | LanguageTool | 8.2 | Free plan | Free | Browser, iOS, Mac, Windows |
| 2 | Grammarly | 8.0 | Free plan | $12/mo | Android, iOS |
| 3 | Trinka | 8.0 | Free plan | API, Browser, Mac, self-hosted, Web, Windows | |
| 4 | MerciApp | 8.0 | Free plan | €12/mo | Android, Browser, iOS, Mac, Web, Windows |
| 5 | Sapling | 7.9 | Free plan | $5/mo | API, Browser, self-hosted, Web, Windows |
| 6 | Wordvice AI | 7.9 | Free plan | $0.70/mo | Browser, Mac, Web, Windows |
| 7 | Harper | 7.9 | Free plan | Free | Android, API, Browser, iOS, Linux, Mac, Web, Windows |
| 8 | ProWritingAid | 7.8 | Free plan | $10/mo | Browser |
| 9 | Scribbr Grammar Checker | 7.8 | Free plan | Free | Browser, Web |
| 10 | Linguix | 7.8 | Free plan | $5/mo | Android, API, Browser, iOS, Web |
| 11 | Duden-Mentor | 7.8 | Free plan | €2.99/mo | Browser, Mac, Web, Windows |
| 12 | iGrammar | 7.8 | Free plan | $10/mo | Android, API, Browser, iOS, Mac, Web |
| 13 | Grammar Guru | 7.8 | Free plan | $1/mo | Browser, Linux, Mac, Web, Windows |
| 14 | Cordial | 7.7 | Free plan | Browser, Web, Windows | |
| 15 | Rechtschreibprüfung24 | 7.6 | Free plan | $300/mo | Web |
| 16 | TextGears | 7.6 | Free plan | $2.48/mo | API, Web |
| 17 | GemType | 7.6 | Free plan | Free | Windows, Mac, Linux, Web |
| 18 | Korr | 7.5 | Free plan | Free | Browser, Web, Windows |
| 19 | WritingTool | 7.5 | Free plan | Free | Linux, Mac, Windows |
| 20 | Lexicon | 7.5 | Free plan | Free | Browser, Linux, Mac, Windows |
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Questions about Instant Grammar alternatives
What is the best alternative to Instant Grammar?
LanguageTool, number 1 in grammar checkers with a score of 8.2 out of 10. The others here: Grammarly, Trinka, MerciApp and 16 more.
What is the best free alternative to Instant Grammar?
LanguageTool is the best-ranked alternative with a free plan. 20 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.