Duolingo English Test on Mac
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).
Key points
- DET runs in browser, not a separate app.
- A small Mac certifying agent does pre-test environment check.
- Continuous webcam + microphone analysis.
- Overlay invisible to screen capture portion.
- Behavior/environment signals can void scores.
Common questions
Is DET accepted at major US universities?
Increasingly yes - 5,000+ programs accept it. Check your target list.
How long does it take to get DET results?
48 hours typically. Faster than TOEFL or IELTS.
What's the cost?
$59 in 2026 - significantly cheaper than TOEFL ($210) or IELTS (~$245).