Best Mock Test for the Duolingo English Test
Arno's DET mock test is full-length, gives you instant estimated scores with subscores, and provides detailed AI feedback on every response. Your first mock test is completely free.
Duolingo English Test
Book your official test with our exclusive discount
Proven Results from Students Worldwide
Arno is a Platinum Tier (highest-tier) member of the Duolingo Global Partner Network. Over 350,000 students worldwide have trusted Arno to help them get ready for the Duolingo English Test.
350,000+
students
200+
countries
38,000,000+
practice questions solved
The Best DET Mock Tests
Arno's mock tests are the best because our scoring is the most accurate, our full mock test is exactly like the real test, and we give you subscores and a detailed Score Report that shows you exactly where to improve.
The Most Accurate Scoring
We use the most powerful AI models from OpenAI and Anthropic trained on thousands of real Duolingo English Tests, making our scoring more accurate than any other platforms'.
Precise Subscores
Unlike the official mock test, Arno's gives you subscores, showing you where you are strong and where you need to focus so that you can more quickly raise your score.
Feedback on Every Response
In your detailed Score Report, see which questions you got correct and incorrect. You also get scores and detailed feedback on individual writing and speaking questions.
Compare Your Performance to Others
See how other students at your level did on specific questions. That way, you can see where you did better for someone at your level and which questions you should've done better on.
Full-Length and Mini Mock Tests
You can take a full mock test that is just like the real DET, or to save time you can take mock tests that focus on one of the four subscores: Reading, Listening, Writing, and Speaking.
Personalized Study Plans
After you take an Arno mock test, we will build you a personalized Daily Study Plan that will pick the right lessons and practice questions for you, ensuring you gain points as fast as possible.
Ready to ace the Duolingo English Test?
Start with a free mock test and get instant scores with detailed feedback.
Claim Your Free Mock TestCompare Arno to Other DET Practice Test Platforms
See how Arno's mock test compares to the official Duolingo practice test and other DET preparation websites and apps.
| Feature | Arno ⭐ | Duolingo (Official Practice Test)Duolingo | DET PracticeDET Practice | Lume |
|---|---|---|---|---|
| Full-length mock test | ✅ Yes | ❌ No | ✅ Yes | ✅ Yes |
| Matches real DET format & timing | ✅ Yes | ✅ Yes | ⚠️ Partial | ⚠️ Partial |
| Instant overall score estimate | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
| Subscore breakdown (Reading, Listening, Speaking, Writing) | ✅ Yes | ❌ No | ✅ Yes | ⚠️ Partial |
| Speaking & writing feedback | ✅ Detailed AI feedback | ❌ No feedback | ⚠️ Basic AI feedback | ⚠️ Basic AI feedback |
| Unlimited retakes | ✅ Yes (with plans) | ✅ Yes | ⚠️ Limited by plan | ⚠️ Limited by plan |
| Questions updated regularly | ✅ Yes | ✅ Yes | ⚠️ Unclear frequency | ⚠️ Unclear frequency |
| Official Duolingo partnership | ✅ Platinum Tier Member (Highest Tier) | ✅ Official owner | ⚠️ Platinum Tier Member | ❌ No |
| Free option available | ✅ Yes | ✅ Yes | ❌ No | ❌ No |
| Best for | Serious score improvement & realistic practice | Free practice | Purchasing individual mock tests | Casual practice & feedback |
Frequently Asked Questions
Real Student Success
Students around the world have trusted Arno to get their dream scores.
Arno is exactly what I was looking for; it's been a total game changer in my DET preparation. All the available questions, mock tests and the invaluable feedback it provides really prepared me to do my best on the test. I highly recommend it!!!
Alexia
🇵🇪 Peru
Arno helped me quickly improve my Duolingo English Test score, which was essential for my dream of becoming a master's degree student in the US. Also, Arno is one of the most useful and impressive AI app implementations I've ever encountered.
Erik
🇵🇾 Paraguay
Before using Arno, I was stuck at 120-130 in my DET practice, struggling with writing. Arno's AI feedback was a game changer, helping me refine my skills. Thanks to Arno, I achieved a 140 on my actual DET. Highly recommend!
Sami
🇵🇰 Pakistan
Sincerely thanks for your dedicated efforts for such an incredibly useful website and the instant feedback feature that helped me prepare for the DET very effectively in the limited time. Purchasing credits for instant feedback is a smart move and also a worthy investment.
Buabucha
🇹🇭 Thailand
It was a wonderful experience to practice for my Duolingo exam with Arno. Not only did it help me improve my score from 100-110 to 120-130 on Duolingo's practice test, but I also learned how to enhance my word selection in the writing and speaking sections through AI-based instructions from Arno.
Basira
🇦🇫 Afghanistan
I was hitting a wall with my speaking and production scores, then came Arno's website. In just 1.5 weeks of practice, I skyrocketed to a 130 in both scores. Huge thanks to Arno for making such an amazing, game-changing platform!!!
Ilsa
🇵🇰 Pakistan
I was so desperate when I found Arno. I had taken the Duolingo English Test three times already. I practiced with Arno for two weeks and I finally passed it with 135 overall score and 105 Production score! I am so grateful, thank you Arno!
Beste
🇹🇷 Turkey
Thank you so much for your versatile platform and valuable pieces of advice...Your platform has the right balance of free and paid features and is much more sophisticated.
Denis
🇰🇿 Kazakhstan
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
Start Your Duolingo English Test Prep Today
Take a full-length mock test and get your estimated DET score instantly, completely free.
Complete DET Simulation · Instant Results · No Credit Card Required