Japan's first Duolingo English Test
Official Gold Partner
AI scoring & Japanese trainer review
Improve faster with DET preparation
About 4,000 practice questions in real test formats. Instant AI feedback for writing and speaking, plus detailed Japanese explanations, help you reach your target score.
Learners so far
4,000+
Duolingo English Test takers and prep app users who came through us
User rating
4.2/5
Survey of DET Bridge test users, 2025
Practice questions
About 4,000
All question types covered
Duolingo English Test
Official Gold Partner
What is DET Bridge
An all-in-one study platform for the Duolingo English Test
From question-type drills to buying your official test at a partner discount, everything for the Duolingo English Test in one place.
Every question type, covered
All of the formats the Duolingo English Test uses, with unlimited retries and full-length mock tests under real time limits.
Reviewed by certified Japanese trainers
Certified Japanese DET instructors review the questions and explanations. Clear explanations in Japanese help you learn techniques for each question type.
Instant AI feedback
Writing and speaking answers are scored the moment you submit them, with specific fixes for the score band you are aiming at.
Score results
Scores that moved with DET Bridge
Real users, before and after
4 months of study
95to125+30
Reading and listening improved the most. I started seeing the patterns behind the questions.
Graduate school application / S., 20s
8 weeks of study
105to130+25
I did not expect this much in a short sprint. The AI explanations were precise.
Overseas MBA application / T., 30s
3 months of study
85to120+35
My first time taking the DET, and I could still work through it step by step. The Japanese explanations helped.
Study abroad preparation / M., teens
Core features
The features that move your score
Content kept in line with the 2025 and 2026 test formats
AI writing feedbackRecommended
Grammar, range of vocabulary and how convincing your answer reads, analyzed in seconds — with the specific edits that move your score.
AI speaking scoringRecommended
Pronunciation, fluency and vocabulary scored automatically, so the section that is hardest to practice alone stops being a guess.
Every question type, covered
Practice one question type at a time, then sit a full test under the real time limit. Everything you need in one app.
30 full-length mock tests
Thirty mock tests under the same time limits as the real exam. Sit the full test again and again, and go into test day prepared.
Pricing
Simple pricing
Pick the plan that matches your test date
Try it first
Free
¥0
- A sample of the practice questions
- Answers and explanations
- AI writing feedback: 1 per day
- AI pronunciation scoring: 1 per day
No credit card required
Studying month to month
Monthly
¥2,480/month
(tax included)
- Every practice question
- Answers and explanations for every question
- Mock tests: 10 per month
- AI writing feedback: 10 per day
- AI pronunciation scoring: 10 per day
Renews monthly, cancel any time
Six months, paid once
6-month pass
¥8,680/6 months
(tax included · about ¥1,446 per month)
- Every practice question
- Answers and explanations for every question
- Mock tests: 10 per month
- AI writing feedback: 10 per day
- AI pronunciation scoring: 10 per day
Valid for 6 months, no auto-renewal
Prices and plan contents may change.
Save more with a student discount
Submit a student ID or proof of enrollment to receive student pricing
Student discount
Special pricing for enrolled students
Student discounts are available to students enrolled at universities, graduate schools, vocational schools, high schools and similar institutions.
Ideal for students preparing for study abroad or graduate school applications with the DET.
- 1Complete the application form with your name and school name
- 2Proof of enrollment or student ID: attach an image and submit your application
- 3After your application is approved, we will email you a student discount coupon code.
Review may take until the next business day.
Contact: contact@kurakumo.jp
Student pricing (tax included)
- Monthly subscription
- ¥1,980
- 6-month pass
- ¥6,980About JPY 1,163 per month
Exclusive DET Bridge benefits
Book the official test
through DET Bridge
¥12,320 list price¥9,400/ test
Price for DET Bridge paid members. Free and non-members pay ¥11,000. All prices include tax.
As an official partner of the Duolingo English Test, we offer the test at a special DET Bridge price. Study in the app, then book the real test through DET Bridge.
- Over 20% off the list price
- Results within 24 hours
YouTube videos
Free study resources
Subscribe for the latest preparation tips. Videos are in Japanese.
GPN Gold Partner
DET Bridge is an official
Duolingo English Test
Gold Partner
Kurakumo Inc., the company behind DET Bridge, is Japan's first Duolingo English Test official Gold Partner. Prepare for the DET with benefits available exclusively through official partners.
Buy the DET at a special price
Buy through DET Bridge for a substantial discount on the list price. Paid members can take the test for ¥9,400, including tax.
Receive your results within 24 hours
Receive your score report within 24 hours instead of the usual 48 hours through our partner benefit.
Premium support
DET Bridge will help if you encounter a problem with your test.
DET-certified trainers
Japan's first prep app
reviewed by DET-certified trainers
Questions and explanations reviewed by trainers certified by Duolingo
Point
Questions and guidance
for Japanese learners
A dedicated native Japanese-speaking instructor certified as a DET trainer reviews our original questions and explanations. Learn strategies for a high score from a Japanese learner's perspective.
DET Bridge has
official Duolingo English Test trainers on its team.
Frequently asked questions
FAQ
Please check before contacting us
How much practice material is there?
01. Read and Select: 900+ vocabulary questions
02. Fill in the Blanks: 300+ questions
03. Read and Complete: 150+ questions
04. Listen and Type: 150+ questions
05. Interactive Reading: 50+ sets (6 questions per set)
06. Interactive Listening: 50+ sets (Listen and Complete / Listen and Respond / Summarize the Conversation)
07. Write About the Photo: 150+ questions
08. Interactive Writing: 100+ questions
09. Speak About the Photo: 150+ questions
10. Read, Then Speak: 50+ questions
11. Interactive Speaking: 350+ questions
12. Writing Sample: 50+ questions
13. Speaking Sample: 50+ questions
More questions will be added over time so you can keep learning.
What score range do the sample answers cover?
How do the subscription and one-time plans differ?
A plan without automatic renewal only lasts for the period you purchase. For example, a 6-month pass started on October 11 lasts until April 10 and does not renew automatically. You can purchase another pass.
What payment methods can I use?
How do I purchase a product?
Can I use DET Bridge on more than one device?
How do I cancel my subscription?
We do not offer refunds for cancellation partway through the subscription period.
Does the monthly subscription price change?
What if I have another question?
New service
Coming soon
Online DET preparation lessons
One-to-one instruction with DET-certified trainers
No enrollment fee when you pre-register
DET preparation: online lessons
Your personal partner in improving your score
Alongside self-study in the app, we are preparing one-to-one online lessons with trainers. Instruction tailored to your weaknesses and target score helps you address points that are easy to miss when studying alone.
- One-to-one instruction with a trainer
- A curriculum tailored to each learner
- Online lessons available from anywhere in Japan
Pre-register now and the enrollment fee is waived
Pre-register →
- Launch date to be announced soon