kitio.aiDuden Mentor vs ConversAI
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 ConversAI starts at $19/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
- One-click replies
- Message summaries
- Tone detection
- Multi-language support
- GIF responses
| Feature | Duden Mentor | ConversAI |
|---|---|---|
| Best for | German spelling, grammar and style checker from the Duden dictionary | One-click AI replies for any messaging app in your browser |
| Category | Writing | Writing |
| Pricing model | Freemium | Paid |
| Starting price | See pricing page | $19/mo |
| Free plan | Yes | No |
| Made by | Cornelsen Verlag | ConversAI |
| Based in | Germany | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Duden Mentor starts at See pricing page and ConversAI starts at $19/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
2 plans
Credits
$15 / 100 credits
- Pay as you go
- Larger packs available
Unlimited
$19/mo
- Unlimited usage
- All features
- Cancel anytime
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
ConversAI
- Works across messaging apps
- Adapts to the tone of a thread
- Credit packs as an alternative
- Still in early access
- No free plan shown
- Few details on supported apps
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 ConversAI if you want:
- Works across messaging apps
- Adapts to the tone of a thread
- Credit packs as an alternative
Watch out: still in early access.
Duden Mentor vs ConversAI FAQ
What is the difference between Duden Mentor and ConversAI?
Duden Mentor: German spelling, grammar and style checker from the Duden dictionary. ConversAI: One-click AI replies for any messaging app in your browser. Both are writing tools.
Is Duden Mentor or ConversAI cheaper?
Duden Mentor starts at See pricing page and ConversAI starts at $19/mo. Check both pricing pages for current plans.
Do Duden Mentor and ConversAI have free plans?
Duden Mentor: Yes. ConversAI: No.
Who makes Duden Mentor?
Duden Mentor is made by Cornelsen Verlag, based in Germany.
Who makes ConversAI?
ConversAI is made by ConversAI.
Which should I choose, Duden Mentor or ConversAI?
Choose Duden Mentor if you value follows duden rules exactly and free basic checks. Choose ConversAI if you value works across messaging apps and adapts to the tone of a thread.