Best Platform to Prepare for the Duolingo English Test
Arno is the best all-in-one DET prep platform because it combines free unlimited practice questions, full mock tests with subscores, accurate AI scoring, and personalized study plans in one place.
👩🎓 2,437 users joined Arno in the last 7 days
“Arno is a very effective tool, especially because it offers realistic practice and immediate AI feedback.”
“The personalized feedback section gives you really good insights into your performance.”
“Arno saves you time and helps you improve your overall score quickly and effectively.”
“With Arno, you'll boost your scores, gain confidence, and even enjoy the learning process along the way.”
“If you are looking to improve your DET score, this is the best platform.”
“Arno is the best platform for DET. By using Arno, your scores will increase rapidly.”
“What I like most is the unlimited mock tests.”
“Arno is amazing!”
“Arno helped me build a daily study plan so I always had clear tasks to work on.”
Proven Results from Students Worldwide
Arno is a Platinum Tier (highest-tier) member of the Duolingo Global Partner Network. Over 250,000 students worldwide have trusted Arno to help them get ready for the Duolingo English Test.
250,000+
students
200+
countries
23,000,000+
practice questions solved
Stop Struggling With DET Prep
Students everywhere face the same challenges. Here is what is holding you back from your target score.
Score won't improve
You practice but don't see progress because you don't know what specific mistakes you're making.
Don't know what to study first
Without a clear plan, you waste time on areas that won't impact your score the most.
Hard to find good study resources
Scattered materials and websites make it difficult to know what's actually effective for the Duolingo English Test.
Don't know how to learn DET vocabulary
Generic apps miss DET-specific words and phrases that actually appear on the test.
Personalized, effective, and built specifically for the DET
Why Is Arno The Best DET Prep Platform?
Arno is the most comprehensive DET prep platform available. It offers free and unlimited practice for every question type, full mock tests with detailed score reports, and AI scoring trained on thousands of real test results. Students also get personalized study plans, a complete DET course, an AI tutor called ChatDET, and a vocabulary builder with over 5,000 words.
Free & Unlimited Practice
Accurate AI Scoring
Full Mock Tests
Complete DET Course
Personalized Study Plans
Expert Advice, Powered by AI
Vocabulary Builder
How Does Arno Compare to Other DET Prep Platforms?
No other platform gives you so much for free and offers so many powerful features on paid plans.
| Feature | Arno ⭐ | Duolingo (Official)Duolingo | DET PracticeDET Practice | DET ReadyDET Ready | DreamyDETDreamyDET |
|---|---|---|---|---|---|
| Free Practice Questions | ✅ Free & Unlimited | ⚠️ Limited | ❌ Paid Only | ⚠️ Very Limited | ⚠️ 15 Free |
| Mock Tests | ✅ Full Tests with Subscores | ⚠️ Overall Score Only | ⚠️ Monthly Caps | ❌ None | ✅ Available |
| AI Scoring | ✅ Highly Accurate | ✅ Official Scoring | ✅ Yes | ⚠️ Writing Questions Only | ⚠️ Less Accurate |
| AI Feedback | ✅ Unlimited (Paid) | ❌ No | ⚠️ Pro Plan Only | ⚠️ Capped at 50 | ⚠️ Less Accurate |
| Personalized Study Plans | ✅ Yes | ❌ No | ⚠️ Limited | ✅ Yes, Created by Teacher Luke | ❌ No |
| DET Course/Lessons | ✅ Complete Course | ⚠️ Basic Info | ⚠️ Basic Info | ✅ Complete Courses & Live Lectures | ❌ No |
| Vocabulary Tools | ✅ 5,000+ Words | ❌ No | ❌ No | ✅ Yes | ✅ Vocab Bank |
| Official Duolingo Partnership | ✅ Platinum Tier | ✅ Official Owner | ⚠️ Platinum Tier | ✅ Platinum Tier | ❌ No |
| Best For | All-in-One DET Prep | Free Official Practice | Buying Mock Tests | Live Expert Instruction | Budget Practice |
How Long to Reach Your Target Score?
Get a personalized estimate based on real improvement data from thousands of DET test takers. See optimistic, typical, and conservative timelines.
Enter Your Scores
Learn with Our Free Resources
Access our extensive collection of free resources and materials designed to help you succeed on the Duolingo English Test
YouTube Channel
In-depth tutorials, tips, and strategies to master the DET
Daily tips, success stories, and quick practice exercises
TikTok
Quick DET hacks, pronunciation tips, and fun learning content
Blog Posts
Comprehensive guides, study plans, and expert insights
Score Calculator
Estimate how long it takes to reach your target DET score
Follow us on all platforms for the latest tips and updates
Frequently Asked Questions
What is Arno?
+Is Arno's practice free?
+How accurate is Arno's scoring?
+How many questions and mock tests can I take?
+Can I use Arno to target a specific score?
+How does Arno's feedback work?
+Can I compare Arno to Duolingo's official practice?
+Can I practice every DET question type on Arno?
+Can I practice DET speaking and writing?
+How should I prepare for the Duolingo English Test?
+How long does it take to improve your DET score?
+What score do I need on the DET for US universities?
+What question types are on the Duolingo English Test?
+Is the Duolingo English Test accepted by universities?
+Start Your Duolingo English Test Prep Today
Join 250,000+ students who've improved their DET scores with AI-powered practice and instant feedback.
Free & Unlimited Practice Questions · Free Mock Test · No Credit Card Required