Twelve full-length practice tests, detailed speaking and writing feedback, and unlimited grading. Choose 7, 30, or 90 days.
PrepEx is a member of the Duolingo English Test Global Partner Network.
$30Regular price
Focused access for the final week before test day.
Renews every 7 days until canceled.Cancel anytime.
$60Regular price
23 more days of Pro access for $15 more than Sprint.
Renews every 30 days until canceled.Cancel anytime.
Regular test price $70 Voucher price $49USD · one time
One DET test. Code in Pro Benefits after payment.
Expires . Take your test within 21 days of applying the code.
Renews at $29.99 every 30 days. Cancel anytime. The voucher is a one-time purchase.
$90Regular price
Full Pro access for a longer preparation window.
Renews every 90 days until canceled.Cancel anytime.
Regular test price $70 Voucher price $49USD · one time
One DET test. Code in Pro Benefits after payment.
Expires . Take your test within 21 days of applying the code.
Renews at $49.99 every 90 days. Cancel anytime. The voucher is a one-time purchase.
Included in every paid plan
Each test takes about 60 minutes, includes 44 timed response units across all 13 task families, and ends with a saved 10–160 practice estimate, detailed speaking and writing feedback, and targeted recommendations. See how the twelve practice tests work.
Sprint, 30-day, and 90-day members receive the same Pro feature access. Choose only by how long you want to prepare before each renewal.
Useful DET practice needs more than a familiar screen. Prompts must create enough room to show real language ability, objective items need one defensible answer, and speaking and writing feedback must stay tied to evidence in the learner's response.
PrepEx creates independently authored DET-style material. As a Global Partner Network member, our team can consult current DET test-readiness resources when checking format guidance and scoring language. Our content process combines those references with structural, language, fairness, media, answer-key, and rendered-interaction review. Learner prompts and private grading material are kept under separate access rules.
AI may help generate candidates and evaluate practice, but it does not make a draft publishable by itself. PrepEx results are preparation estimates designed to show what to work on next; they are not official Duolingo English Test scores.
PrepEx is a member of the Duolingo English Test Global Partner Network. Our practice content, feedback, and score estimates are independently created by PrepEx and are not official DET materials, scores, or results. Duolingo English Test is a trademark of Duolingo, Inc.
