Focuses heavily on PTE and IELTS exam practice with robust AI scoring, similar to Prep Edu's test rooms.
Focuses heavily on PTE and IELTS exam practice with robust AI scoring, similar to Prep Edu's test rooms.
OETStudy records 4,738 monthly visits with +264.2% month-over-month growth and Free pricing. Prep Edu records 1,414,975 monthly visits with -19.8% growth and Paid pricing.

AI-powered practice and scoring for the Duolingo English Test
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | oetstudy.com | prepedu.com |
| Pricing Model | Free | Paid |
| Monthly Visits | 4.74K (4,738) | 1.41M (1,414,975) |
| MoM Traffic Delta | +3.44K (+264.2%) | -349.68K (-19.8%) |
| Primary Market & Share | 🇺🇸 United States (100%) | 🇻🇳 Vietnam (78%) |
| Direct Visits / mo | 1.54K | 479.07K |
| User Rating | 4.4 | 4.1 |
| Supported Platforms | Website | Website |

AI-powered practice and scoring for the Duolingo English Test
A large bank of DET-style items spanning speaking, writing, listening, and reading, graded by difficulty so you can practise at the level you need.
Speaking and writing submissions are scored automatically, evaluating pronunciation, fluency, grammar, and content structure with suggestions for improvement.
Check your vocabulary level against CEFR bands and build word lists clustered around the question types you practise most.
Practice statistics and score analysis highlight weak areas and show how your performance changes over time.
Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms
Rehearse exam-style speaking tasks with AI scoring and multi-layer feedback covering grammar, pronunciation, fluency, vocabulary and how well your ideas are organised.
Submit written answers and receive automated scoring with suggestions on structure, vocabulary range and accuracy to raise your band score.
A companion that answers questions, walks through difficult tasks and keeps learners motivated between lessons.
Structured IELTS, TOEIC and HSK programmes, a PrepTalk English speaking course, entry tests and mock exams that mirror the real format.
Focuses heavily on PTE and IELTS exam practice with robust AI scoring, similar to Prep Edu's test rooms.
Focuses heavily on PTE and IELTS exam practice with robust AI scoring, similar to Prep Edu's test rooms.
SpecialistAI English speaking coach with instant pronunciation feedback

Provides online exam prep and instant AI scoring for PTE and IELTS, but with a simpler course structure.
Provides online exam prep and instant AI scoring for PTE and IELTS, but with a simpler course structure.

SpecialistLearn a new language by talking to lifelike AI tutors
SpecialistLearn a new language by talking to lifelike AI tutors
Practice speaking a new language with an AI conversation partner
Practice speaking a new language with an AI conversation partner
Delivers automated AI scoring for major English proficiency exams, though less focused on structured video lessons than Prep.
Delivers automated AI scoring for major English proficiency exams, though less focused on structured video lessons than Prep.

SpecialistSpeak a new language from day one with human-like AI and expert human tutors
SpecialistSpeak a new language from day one with human-like AI and expert human tutors
Offers excellent AI speaking coaching for IELTS, but lacks the comprehensive written course library found in Prep.
Offers excellent AI speaking coaching for IELTS, but lacks the comprehensive written course library found in Prep.
Specializes specifically in Duolingo English Test preparation with adaptive mock exams, whereas Prep covers multiple exams.
Specializes specifically in Duolingo English Test preparation with adaptive mock exams, whereas Prep covers multiple exams.

SpecialistLanguage learning built around speaking, powered by AI conversation practice
SpecialistLanguage learning built around speaking, powered by AI conversation practice

Focuses exclusively on TOEFL test preparation with automated scoring, whereas Prep supports a wider variety of language exams.
Focuses exclusively on TOEFL test preparation with automated scoring, whereas Prep supports a wider variety of language exams.
Offers AI-powered mock tests and scoring for TOEFL and IELTS, though with a smaller user community than Prep.
Offers AI-powered mock tests and scoring for TOEFL and IELTS, though with a smaller user community than Prep.