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Duolingo English Test on Mac

Updated October 2026 · 3 min read · Tested with LockDown Browser v2.1.6.01

The Duolingo English Test (DET) is a 1-hour at-home English proficiency exam, accepted by 5,000+ universities. It uses Duolingo's own proctoring system on Mac (browser + webcam + audio).

Duolingo operates DET delivery directly - no Pearson VUE or Prometric. The setup is browser-based: you sign in to englishtest.duolingo.com, download a small certifying app for Mac that does pre-test environment check, then take the test in browser. Continuous webcam frames go to Duolingo's ML; microphone audio gets analyzed for second voices. The screen-capture portion honors window privacy on Mac. The overlay is invisible. Duolingo's certifier and human reviewers can void scores based on behavioral or environmental signals (room, devices, audio).

Increasingly yes - 5,000+ programs accept it. Check your target list.

48 hours typically. Faster than TOEFL or IELTS.

$59 in 2026 - significantly cheaper than TOEFL ($210) or IELTS (~$245).

The Safe macOS Solution

Need reference access during your exam?

Fracture runs a native floating overlay that sets the macOS window privacy flag. It is 100% excluded from screen capture feeds, window lists, and proctor recordings.

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