Duden-Mentor vs Merriam-Webster Dictionary

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.

Merriam-Webster Dictionary is an online reference and mobile dictionary and thesaurus for word lookup and vocabulary building. Its regularly updated online dictionary includes new entries and revised definitions. The iOS and Android app provides offline access to definitions and synonyms, voice search, audio pronunciations, usage examples, quizzes, favorite words and search history. The website adds Word of the Day, grammar and usage guidance, wordplay, games, quizzes and a thesaurus. Medical, Legal and Kids dictionaries are available through an in-app purchase. Developers can use the Dictionary API for definitions, etymologies, pronunciations, synonyms, antonyms and specialized medical, Spanish, ESL and student-friendly vocabulary. Non-commercial API use is free up to 1,000 queries per day per key and limited to two reference APIs; commercial terms are handled case by case. The app is free with ads. Listed iOS purchases include Premium Monthly at $1.79 a month, Remove Ads at $2.99, paid once, All References + Remove Ads at $5.99, paid once, and Premium Annual at $9.99 a year.