Duden-Mentor
8.4#6 in grammar checkersFrom €2.99 a monthFree planWebAPIExtensionmacOS
VisitDuden-Mentor vs The Free Dictionary
The Free Dictionary
8.0#3 in online dictionaries$9.99 one-timeFree planAndroidiOSWebAPI
VisitWhat both publish
| Fact | Duden-Mentor | The Free Dictionary |
|---|---|---|
| Founded | Cornelsen states that Franz Cornelsen founded the Cornelsen Verlag in Berlin in 1946. | Farlex says it was founded in 2004, while TheFreeDictionary launched in 2003. |
| Integrations | The Word add-in supports Microsoft Word for macOS from version 2016 and Windows from version 2019. | The app listing says other apps can access The Free Dictionary through API calls and directs developers to contact Farlex for instructions. |
| Rating on Chrome Web Store | 3.3 out of 5 from 75 ratings | 4.4 out of 5 from 7 ratings |
| Security claim | Duden says submitted texts are encrypted in transit, anonymized for data protection and excluded from AI training. | Farlex says downloads from its site are free of spyware, adware, malware and popups. |
Duden-Mentor plans
- BasisFree
- Duden Pur€2.99 a month
- Pur€2.99 a month
- Premium€7.95 a month
- Premium Plus€9.95 a month
The Free Dictionary plans
- Classic free appFree
- The Free Dictionary appFree
- The Free Dictionary websiteFree
- Ad-free upgrade$5.99, paid once
- Dictionary Pro$9.99, paid once
Pick Duden-Mentor if…
It suits German writers who want spelling, grammar, punctuation and style suggestions, including those writing for Germany, Austria or Switzerland. Browser and Word users can use its listed extensions and add-in, subject to the stated version requirements.
Pick The Free Dictionary if…
It suits readers who want a broad reference library with vocabulary tools, translation lookup, and offline English dictionary access. It may also suit developers seeking API access, though the listing directs them to contact Farlex for instructions.