Duden-Mentor vs GrammarLookup
Duden-Mentor
mentor.duden.deGrammarLookup
grammarlookup.comSide by side
| Figure | Duden-Mentor | GrammarLookup |
|---|---|---|
| Price from | €2.99/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| API | Yes | — |
| Plans published | 8 | 2 |
| Spec score · Grammar checkers | 9.4 (#1) | 8.3 (#32) |
| Founded | Cornelsen states that Franz Cornelsen founded the Cornelsen Verlag in Berlin in 1946. | The maker says GrammarLookup launched on July 10, 2017. |
| Free plan | Yes | Yes |
| Integrations | The Word add-in supports Microsoft Word for macOS from version 2016 and Windows from version 2019. | The maker's pages reviewed here list separate web tools but do not identify third-party integrations. |
| Maker | Duden is a brand of the Cornelsen Group. | The about page identifies Kamran Ali as the maker and says GrammarLookup began on July 10, 2017. |
| Punctuation | The checker analyzes punctuation, including comma placement and sentence-ending marks. | The punctuation checker highlights issues and offers suggested edits that users can accept. |
| Purpose | Duden-Mentor checks German text for spelling, grammar, punctuation and style and suggests corrections. | GrammarLookup describes itself as a free tool for checking grammar and punctuation in a rich text editor. |
| Security | The maker says texts are transmitted encrypted, are not used for AI training, and are deleted after checking. | The privacy policy says the service uses commercially acceptable means to protect personal data but cannot guarantee absolute security. |
| Style suggestions | Yes | Yes |
| Support | The FAQ says Duden customer service can provide personal help if its answers do not resolve a question. | The contact page invites questions, suggestions, feedback, and requests for assistance by email or phone. |
Plans
Duden-Mentor
- BasisFree
- BasisFree
- Duden Pur€2.99 a month
- Pur€2.99 a month
- Premium€7.95 a month
- Premium€7.95 a month
- Premium Plus€9.95 a month
- Premium Plus€9.95 a month
In their own words
Duden-Mentor
Duden-Mentor checks German text for spelling, grammar, punctuation, and style, then suggests corrections. It can flag filler words, repeated wording, and overly long sentences, with suggestions for readability. The service supports German variants for Germany, Austria, and Switzerland, but checks German only. Browser extensions are available for Chrome, Firefox, and Microsoft Edge, and the plug-in works in text fields on services including Gmail, Web.de, GMX.de, Trello, Facebook, and WordPress. A Microsoft Word add-in supports macOS from Word 2016 and Windows from Word 2019. An internet connection is required. Duden says text is encrypted in transit, not used for AI training, and deleted after checking. Basis is free and lists a 10-word personal dictionary and 500 characters without an account. Pur costs €2.99 a month, billed 35,88 € pro Jahr, with 10 test corrections or rewrites monthly. Premium costs €7.95 a month, billed 95,40 € pro Jahr, with 250 monthly text optimizations; Premium Plus costs €9.95 a month, billed 119,40 € pro Jahr, with unlimited optimizations. Paid plans are annually payable and annually cancellable.
GrammarLookup
GrammarLookup has no write-up on Specifiction yet; its figures are above.