Every DET Prep Comparison Ends Here
Platinum-tier partnership with Duolingo. AI scoring trained on 40,000+ mock tests. Every question type, free to practice. See how we stack up — the facts speak for themselves.
Data‑Backed Results
We are a Platinum Partner. Here is why it matters.
We earned the highest tier in the Duolingo Global Partner Network by working directly with the test creators.
- Real-Time Updates. When the test changes, we change immediately. You never study outdated materials.
- Flawless Scoring. Our AI trains on the exact test grading rubrics. The score you see is the score you get.
- True Peace of Mind. Practice safely on the platform that Duolingo explicitly trusts.
Not All DET Prep Is the Same, Here’s What You Actually Get
See exactly what DETPractice, Arno, DET Ready, and others offer — feature by feature.
| Features | DETPractice | Arno | DET Ready | Others |
|---|---|---|---|---|
| Practice Questions | Largest Bank 18,000+ questions across every DET question type. | Limited Scope Less DET-specific depth when compared side by side. | Limited Coverage Useful practice, but narrower question-bank depth. | Limited Usually smaller banks with less complete coverage. |
| Mock Tests | Closest to Test Day Quick practice plus full-length mocks with deeper reporting. | One Try Only Only 1 mock first, then paid — with delayed and less reliable scoring. | No Mock Service Focused on lessons and practice, not full mock-test simulation. | Limited or None Some offer a few mocks. Others do not offer mock tests at all. |
| AI Scoring | More Accurate AI scoring trained on 40,000+ mock tests. | AI Scoring Available, but with less DET-specific proof on the page. | AI-Supported Useful support, but less scoring-first positioning. | Hit or Miss Accuracy and scoring depth vary widely by platform. |
| AI Feedback | AI + Humans Instant AI feedback with expert review when you need nuance. | Mostly Hype ChatDET feels more like a basic GPT wrapper than real score-improving feedback. | Partly Available AI feedback is limited to only some writing question types. | Often Limited Usually restricted, lighter, or premium-only. |
| Study Plans | Personalized Fast Built around your score, target, and timeline from the start. | Plan Support Personalization exists, but the DET positioning is less focused. | Guided Prep Strong direction, but less plan-driven inside the platform. | Generic Often broad advice instead of a real study blueprint. |
| Courses | 2 Full Courses One free and one paid course built for different score goals and learner needs. | Paid Only No free course path, and the platform is not built around professional teaching. | Paid Only Luke’s teaching is strong, but the course path is still not very budget-friendly. | Usually Thin Many competitors stop at snippets, tips, or paid-only lessons. |
| Vocabulary Tools | 15,000+ A much larger DET vocabulary bank built for serious score improvement. | 5,000+ Useful, but still less than one-third of DETPractice’s vocabulary scale. | Lighter Supportive resources, but not a standout vocabulary system. | Usually Limited Often basic, scattered, or missing altogether. |
| Duolingo Partnership | Platinum Tier Direct alignment with the highest partner level in the network. | Platinum Tier Also claims top-tier partner status. | Platinum Tier Also claims top-tier partner status. | Usually Independent Most competitors do not lead with official partner status. |
| Best For | All-in-One DET Prep | Causal Users | Teacher-Led Fans | DET Beginners |
What Makes DETPractice Different
100% DET Focused
18,000+ questions designed specifically for every DET question type. Not a general English app. Not a multi-test platform. Just the deepest, most focused DET prep you’ll find.
AI + Teacher Feedback
Get your score instantly from AI trained on 40,000+ mock tests. Need deeper feedback on Speaking or Writing? Request a review from a real ESL teacher.
Your Personal Study Plan
Tell us your current level, target score, and test date. You’ll get a focused plan that shows you exactly what to practice and when.
Fact vs. Fiction: What DET Prep Actually Looks Like
Some claims about DET prep don’t hold up. Here’s what really matters.
"Most platforms cover all DET question types equally."
Most platforms cover a handful of question types well and skip the rest. DETPractice has 18,000+ questions across every single DET question type — no gaps.
"All mock tests are basically the same."
Our full-length mocks are 1:1 replicas of the real exam — with adaptive difficulty, 8 subscores, and a detailed performance report that shows exactly where to improve.
"Basic AI is enough to score your Speaking and Writing."
Generic AI misses what matters most. Our scoring engine is trained on 40,000+ real mock tests, and you can also request a manual review from a human ESL expert.
Real Success Stories
Actual DET score reports from successful students who prepared with DETPractice.
Frequently Asked Questions
How long does it take to see my score improve?
Can I use DETPractice if I’m just starting my DET prep?
What is the difference between AI Scoring and Human Expert Review?
Are your premium full-length mock tests worth it?
How does your Platinum Partnership benefit me?
Ready to Reach Your Dream DET Score?
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