Duden-Mentor review
A focused German writing assistant with strong business integrations and clear annual pricing.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Duden-Mentor is a German-language digital writing assistant for individuals and businesses. It checks spelling, grammar, punctuation, style and readability, while also identifying filler words and repetition. Writers can receive synonym suggestions, use a thesaurus, maintain a personal dictionary and apply regional settings for Germany, Austria and Switzerland. The product is available through the web, Windows, macOS, Chrome, Firefox, Edge and Microsoft Word, with business access to a REST API. It suits German-speaking teams that want proofreading across everyday writing environments rather than a general-purpose multilingual checker.
Pricing is structured around a free plan and annual business licenses. The published business tiers list €8.30 per user per month for 1–4 licenses, €6.40 for 5–10 licenses and €5.50 for 11–25 licenses, with 19% VAT added. The smaller tier includes person-bound, device-independent licensing, while the larger tiers use volume-discounted licensing. Premium capabilities include larger text limits, expanded style suggestions, personal dictionaries and AI-assisted rewriting and correction suggestions. The tier structure favors teams that can commit annually and benefit from volume pricing.
Its strongest differentiator is the combination of detailed German writing feedback and broad access options. Browser extensions cover Chrome, Firefox and Edge, the Microsoft Word add-in brings checking into document workflows, and the REST API can connect the service with business systems. Style and readability checks go beyond basic spelling correction, while regional settings help tailor German usage to Germany, Austria or Switzerland. Choose Duden-Mentor for German business proofreading across web, desktop, Word and browser workflows. Consider an alternative if multilingual coverage or mobile applications is central to the buying decision.
Duden-Mentor pros and cons
- Where it wins
- Checks spelling, grammar, punctuation, style, readability and repetition.
- Works across web, Windows, macOS, Word and major browsers.
- Offers team licensing and REST API integration for business systems.
- Where it doesn't
- Business pricing is billed annually, with 19% VAT added.
- Language coverage is focused on German-language writing.
- The 1–4 license tier costs more per user than larger tiers.
Duden-Mentor fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update