Cambridge Play vs DETPractice

Cambridge Play is a study platform for Cambridge English exam preparation, with practice for B1 Preliminary, B2 First, C1 Advanced and C2 Proficiency. Learners work on Use of English, Reading, Listening, Writing and Speaking. Writing activities return a score and feedback on strengths, areas to improve, grammar and language, plus suggestions for strengthening an answer. For speaking, learners record responses to exam prompts and receive a score. Game elements include hearts, daily streaks, streak shields, experience points, gifts, badges and challenge leaderboards. Free play starts with five hearts, replenished one every 90 minutes; free Writing and Speaking practice covers the first five stages of each level. The Free plan is free. PRO costs $9.99 a month or $49.99 a year, adding unlimited hearts, access to all Writing and Speaking stages, a weekly streak shield, unlimited gifts, higher AI limits and premium feedback. Cambridge Play is intended for learners aged 16 and over and identifies itself as independent of Cambridge University Press and Assessment.

DETPractice is a preparation platform for the Duolingo English Test, available on the web, iOS, and Android. It offers more than 18,000 practice questions, with content described as updated every day, plus courses, lessons, guides, and other learning materials. Adaptive full-length mock tests provide estimated scores in one to five minutes. AI tools score and correct speaking and writing responses, while an AI tutor can answer DET questions, check grammar, translate, rewrite text, and create practice content. The free tier includes all question types, more than 300 practice questions, basic explanations, and limited access to some features. Basic costs $9.90 a month, Plus costs $19.90 a month, and Pro costs $39.90 a month; paid tiers list varying mock-test and AI-correction allowances. Mock-test access expires after 90 days. The same account and supported learning history can be used in a browser and the mobile apps. DETPractice describes itself as a Platinum Partner for test preparation, while noting that its practice questions and mock tests do not replace the official Duolingo English Test.