kitio.aiDETPractice vs CasperPractice
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. DETPractice starts at See pricing page and CasperPractice starts at $159 one-time. Check both pricing pages for current plans.
CASPer test practice questions with AI coaching on every answer
Freemium · $159 one-timeAt 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
- 150+ practice questions
- 12 practice tests
- AI coaching on answers
- Peer ranking of scores
- Typed and video answer simulator
| Feature | DETPractice | CasperPractice |
|---|---|---|
| Best for | Duolingo English Test prep with AI-scored mock exams and corrections | CASPer test practice questions with AI coaching on every answer |
| Category | Education | Education |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $159 one-time |
| Free plan | Yes | Yes |
| Made by | DETPractice | CasperPractice |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
DETPractice starts at See pricing page and CasperPractice starts at $159 one-time. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
DIY
Free
- Practice questions and tests
- Every answer scored and ranked
- First 2 answers coached
Basic
$159 one-time
- Everything in DIY
- 1 week of coaching on all answers
Pro
$189 one-time
- Lifetime unlimited coaching
- Coaching on practice tests
- Fourth-quartile guarantee
- Sale price, normally $249
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
CasperPractice
- Large free question bank
- Feedback includes an improved answer
- One-time payment, no subscription
- Paid plans are expensive for test prep
- Guarantee has a 40-question minimum
- Only useful for CASPer takers
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 CasperPractice if you want:
- Large free question bank
- Feedback includes an improved answer
- One-time payment, no subscription
Watch out: paid plans are expensive for test prep.
DETPractice vs CasperPractice FAQ
What is the difference between DETPractice and CasperPractice?
DETPractice: Duolingo English Test prep with AI-scored mock exams and corrections. CasperPractice: CASPer test practice questions with AI coaching on every answer. Both are education tools.
Is DETPractice or CasperPractice cheaper?
DETPractice starts at See pricing page and CasperPractice starts at $159 one-time. Check both pricing pages for current plans.
Do DETPractice and CasperPractice have free plans?
DETPractice: Yes. CasperPractice: Yes.
Who makes DETPractice?
DETPractice is made by DETPractice.
Who makes CasperPractice?
CasperPractice is made by CasperPractice.
Which should I choose, DETPractice or CasperPractice?
Choose DETPractice if you value covers every det question type and mock test results within minutes. Choose CasperPractice if you value large free question bank and feedback includes an improved answer.