kitio.aiDuden Mentor vs CorrectEnglish
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Duden Mentor starts at See pricing page and CorrectEnglish starts at $24/mo. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- German spelling checks
- Grammar and punctuation
- Style tips
- Synonym suggestions
- Word add-in
- Grammar and spelling checks
- Browser extension and mobile keyboard
- Plagiarism scanning
- Citation style templates
- ESL feedback in 7 languages
| Feature | Duden Mentor | CorrectEnglish |
|---|---|---|
| Best for | German spelling, grammar and style checker from the Duden dictionary | AI grammar and writing feedback for browsers and mobile |
| Category | Writing | Writing |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $24/mo |
| Free plan | Yes | Yes |
| Made by | Cornelsen Verlag | CorrectEnglish |
| Based in | Germany | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
Duden Mentor starts at See pricing page and CorrectEnglish starts at $24/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- Core writing advice
- ESL support
Professional
$24/mo
- Plagiarism scanning
- Research tools
- Everything in Free
Pro Saver
$80/yr
- Billed once a year
- Everything in Professional
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Duden Mentor
- Follows Duden rules exactly
- Free basic checks
- Works in Word and browsers
- German only
- Style features need Premium
CorrectEnglish
- Works across browsers and phones
- Built-in citation style templates
- Support for English learners
- Monthly plan is pricey next to the yearly one
- Free tier has a low word limit
- Plagiarism checks need a paid plan
Which one should you choose?
Choose Duden Mentor if you want:
- Follows Duden rules exactly
- Free basic checks
- Works in Word and browsers
Watch out: german only.
Choose CorrectEnglish if you want:
- Works across browsers and phones
- Built-in citation style templates
- Support for English learners
Watch out: monthly plan is pricey next to the yearly one.
Duden Mentor vs CorrectEnglish FAQ
What is the difference between Duden Mentor and CorrectEnglish?
Duden Mentor: German spelling, grammar and style checker from the Duden dictionary. CorrectEnglish: AI grammar and writing feedback for browsers and mobile. Both are writing tools.
Is Duden Mentor or CorrectEnglish cheaper?
Duden Mentor starts at See pricing page and CorrectEnglish starts at $24/mo. Check both pricing pages for current plans.
Do Duden Mentor and CorrectEnglish have free plans?
Duden Mentor: Yes. CorrectEnglish: Yes.
Who makes Duden Mentor?
Duden Mentor is made by Cornelsen Verlag, based in Germany.
Who makes CorrectEnglish?
CorrectEnglish is made by CorrectEnglish.
Which should I choose, Duden Mentor or CorrectEnglish?
Choose Duden Mentor if you value follows duden rules exactly and free basic checks. Choose CorrectEnglish if you value works across browsers and phones and built-in citation style templates.