OETStudy
AI-powered Duolingo English Test practice with scoring, feedback, analytics, and a large question bank.
About OETStudy
OETStudy is a browser-based preparation platform for the Duolingo English Test. It combines more than 15,000 practice questions with AI scoring for speaking and writing. Learners practise reading, listening, speaking, writing, vocabulary, and grammar, then use instant feedback, score analysis, practice statistics, vocabulary lists, and a CEFR checker to identify weak areas. The free service allows 100 questions per day and three AI-score uses, while paid VIP access expands the question bank and removes the AI-scoring quota. Speaking results depend on microphone quality and background noise, and the help guidance recommends the latest desktop Chrome browser for audio and image compatibility. Accounts support one active device at a time, practice records are retained for the most recent year, and paid packages do not renew automatically.
Best for
Best use cases
Run daily practice with a large bank of difficulty-graded DET questions
Record speaking and submit writing answers for immediate AI feedback
Review score analysis and practice statistics to focus later study
Compare before choosing
Free access suits light daily practice but limits questions and AI scoring
VIP removes the AI-scoring quota and opens the 15,000+ question bank
Longer VIP packages reduce the need for frequent manual renewal
Features
Practice all DET question types
Work through difficulty-graded reading, listening, speaking, and writing questions from a bank of more than 15,000 items.
Get speaking and writing feedback
Submit recordings and written answers for AI scores, instant feedback, and improvement suggestions.
Track weak areas over time
Use score analysis, practice statistics, vocabulary lists, and saved vocabulary to guide later study.
Pros
- More than 15,000 questions cover the main DET skill areas and question types.
- AI scoring gives immediate feedback on speaking and writing without waiting for a tutor.
- A free tier supports daily practice before paying, and paid packages do not renew automatically.
Cons
- Free access is capped at 100 questions per day and three AI-score uses.
- Audio scoring accuracy can be affected by microphone quality and environmental noise.
- The help guidance recommends the latest desktop Chrome, and only one device can remain logged in at a time.
Pricing Plans
Free
- 100 questions per day
- 3 AI-score uses
- Word-level CEFR Checker
VIP 10 days
- Access to 15,000+ questions and answers
- Unlimited AI scoring using version 1.5
- Word and sentence CEFR Checker
- Junior AI Mentor (Beta)
VIP 20 days
- Access to 15,000+ questions and answers
- Unlimited AI scoring using version 1.5
- Word and sentence CEFR Checker
- Junior AI Mentor (Beta)
VIP 30 days
- Access to 15,000+ questions and answers
- Unlimited AI scoring using version 1.5
- Word and sentence CEFR Checker
- Junior AI Mentor (Beta)
VIP 90 days
- Access to 15,000+ questions and answers
- Unlimited AI scoring using version 1.5
- Word and sentence CEFR Checker
- Junior AI Mentor (Beta)
* Pricing information is for reference only. Please refer to the latest announcement on OETStudy's official website.