Best Duden-Mentor Alternatives in 2026
Updated
20 apps from grammar checkers ranked against Duden-Mentor on the same published basis.
- 1Duden-Mentor vs LanguageTool
- 2Duden-Mentor vs Grammarly
- 3Duden-Mentor vs Trinka
- 4Duden-Mentor vs MerciApp
- 5Duden-Mentor vs Sapling
- 6Duden-Mentor vs Wordvice AI
- 7Duden-Mentor vs Harper
- 8Duden-Mentor vs ProWritingAid
- 9Duden-Mentor vs Scribbr Grammar Checker
- 10Duden-Mentor vs Linguix
- 12Duden-Mentor vs iGrammar
- 13Duden-Mentor vs Grammar Guru
- 14Duden-Mentor vs Cordial
- 15Duden-Mentor vs Rechtschreibprüfung24
- 16Duden-Mentor vs TextGears
- 17Duden-Mentor vs GemType
- 18Duden-Mentor vs Korr
- 19Duden-Mentor vs WritingTool
- 20Duden-Mentor vs Lexicon
- 21Duden-Mentor vs GrammarCheck.ai
Duden-Mentor 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 |
| 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 |
| 21 | GrammarCheck.ai | 7.5 | Free plan | $0.21/mo | Android, API, Browser, iOS, Linux, Web |
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Questions about Duden-Mentor alternatives
What is the best alternative to Duden-Mentor?
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 Duden-Mentor?
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.