kitio.aiDiffit vs PrepAI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Diffit starts at $14.99/mo and PrepAI starts at See pricing page. 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
- Leveled reading passages
- Vocabulary lists
- Question generation
- Google and Microsoft export
- Standards alignment
- Quiz generation from text, topics and URLs
- Group quiz hosting
- LMS export
- Flashcards
- Quiz analytics
| Feature | Diffit | PrepAI |
|---|---|---|
| Best for | Turn any article, video or topic into reading at multiple levels | AI quiz and assessment maker for educators |
| Category | Education | Education |
| Pricing model | Freemium | Freemium |
| Starting price | $14.99/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Diffit | PrepAI |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Diffit starts at $14.99/mo and PrepAI starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- 30 quizzes per month
- 2 requests per minute
- Limited export options
Pay As You Go
₹15/credit
- No monthly cap
- Pay only for purchased credits
Annual
₹19,999/yr
- Up to 250 quizzes per month
- No standard rate limits
- Priority processing
Lifetime
₹49,999 one-time
- Unlimited quiz generation
- Standard AI
- 2x rate limit
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
Diffit
- Fast differentiation from any source
- Supports many languages
- Free plan is useful
- Exports require the paid plan
- Questions sometimes need editing
PrepAI
- Quizzes from text, URLs and files
- Exports to major LMS platforms
- Lifetime and pay-as-you-go options
- Free plan is limited to 30 quizzes a month
- Some exports are paid unlocks
- Pricing shown in rupees
Which one should you choose?
Choose Diffit if you want:
- Fast differentiation from any source
- Supports many languages
- Free plan is useful
Watch out: exports require the paid plan.
Choose PrepAI if you want:
- Quizzes from text, URLs and files
- Exports to major LMS platforms
- Lifetime and pay-as-you-go options
Watch out: free plan is limited to 30 quizzes a month.
Diffit vs PrepAI FAQ
What is the difference between Diffit and PrepAI?
Diffit: Turn any article, video or topic into reading at multiple levels. PrepAI: AI quiz and assessment maker for educators. Both are education tools.
Is Diffit or PrepAI cheaper?
Diffit starts at $14.99/mo and PrepAI starts at See pricing page. Check both pricing pages for current plans.
Do Diffit and PrepAI have free plans?
Diffit: Yes. PrepAI: Yes.
Who makes Diffit?
Diffit is made by Diffit, based in United States.
Who makes PrepAI?
PrepAI is made by PrepAI.
Which should I choose, Diffit or PrepAI?
Choose Diffit if you value fast differentiation from any source and supports many languages. Choose PrepAI if you value quizzes from text, urls and files and exports to major lms platforms.