kitio.aiDETPractice vs OETStudy
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. DETPractice starts at See pricing page and OETStudy starts at $10.99 one-time. 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
- DET question bank
- Adaptive mock tests
- AI writing correction
- AI speaking correction
- DET courses and guides
- 15,000+ practice questions
- AI speaking scoring
- AI writing scoring
- Vocabulary lists
- Progress tracking
| Feature | DETPractice | OETStudy |
|---|---|---|
| Best for | Duolingo English Test prep with AI-scored mock exams and corrections | AI-scored practice platform for the Duolingo English Test |
| Category | Education | Education |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $10.99 one-time |
| Free plan | Yes | Yes |
| Made by | DETPractice | OETStudy |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
DETPractice starts at See pricing page and OETStudy starts at $10.99 one-time. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- 100 questions per day
VIP 10 days
$10.99 one-time
- 15,000+ questions and answers
VIP 30 days
$14.99 one-time
- 15,000+ questions and answers
VIP 90 days
$39.99 one-time
- 15,000+ questions and answers
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
DETPractice
- Covers every DET question type
- Mock test results within minutes
- Members get a DET exam discount
- Only useful for the Duolingo English Test
- Prices not shown clearly on the site
- Mock test access expires after 90 days
OETStudy
- Covers all DET question types
- AI feedback on speaking and writing
- Short passes for trials
- Free tier capped at 100 questions per day
- Passes expire after a set number of days
- Built only for the DET
Which one should you choose?
Choose DETPractice if you want:
- Covers every DET question type
- Mock test results within minutes
- Members get a DET exam discount
Watch out: only useful for the duolingo english test.
Choose OETStudy if you want:
- Covers all DET question types
- AI feedback on speaking and writing
- Short passes for trials
Watch out: free tier capped at 100 questions per day.
DETPractice vs OETStudy FAQ
What is the difference between DETPractice and OETStudy?
DETPractice: Duolingo English Test prep with AI-scored mock exams and corrections. OETStudy: AI-scored practice platform for the Duolingo English Test. Both are education tools.
Is DETPractice or OETStudy cheaper?
DETPractice starts at See pricing page and OETStudy starts at $10.99 one-time. Check both pricing pages for current plans.
Do DETPractice and OETStudy have free plans?
DETPractice: Yes. OETStudy: Yes.
Who makes DETPractice?
DETPractice is made by DETPractice.
Who makes OETStudy?
OETStudy is made by OETStudy.
Which should I choose, DETPractice or OETStudy?
Choose DETPractice if you value covers every det question type and mock test results within minutes. Choose OETStudy if you value covers all det question types and ai feedback on speaking and writing.