DET - Duolingo English Test

DET - Duolingo English Test

By Duolingo

The Duolingo English Test (DET) is an education app for students to complete identity and environment verification for remote English proficiency certification.

The App DNA

What makes this app unique?

The platform removes the friction of physical travel to test centers by enabling secure, at-home proctoring for university admissions.

For Students and professionals requiring English proficiency certification for university admissions or institutional requirements.

What does it look like?

Key features

ID and Biometric Verificationstandard

Captures facial scans and ID documentation to verify test-taker identity.

Environment Security Scanedge

Guides users through a room and ear scan to detect unauthorized materials or devices.

Computer Recording Setupedge

Configures the mobile device to record the computer screen and environment during the assessment.

How much does it cost?

paidPurchase a test for certification

The model relies on individual test purchases, positioned as a lower-cost alternative to traditional English proficiency exams.

Velocity

Maintenance developmentperformanceShow more...

The app has entered a maintenance phase, with no new feature builds or updates released in the last 183 days. The development history shows a pattern of minor, incremental updates focused exclusively on performance and bug fixes. Given the lack of activity over the past six months, the development momentum is currently stagnant.

See all version history

Who built it?

Duolingo

6 apps tracked · Education

Duolingo English Test (DET)Duolingo English Test (DET)Duolingo: Language LessonsDuolingo: Language LessonsLearn to Read - Duolingo ABCLearn to Read - Duolingo ABCLearn to Read - Duolingo ABCLearn to Read - Duolingo ABCDuolingo: Language LessonsDuolingo: Language Lessons
Explore the full publisher profile

User Sentiment

What do users think recently?

Fresh user feedback skews upset.

How are ratings & reviews evolving?

App Store
3.29 · 14

What users say, by theme

What Frustrates Users
  • Technical instability during high-stakes exams causes camera malfunctions and system errors for test takers
+ 2 more themes

2 of 2 recent reviews analyzed · limited sample

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Unlock 2 more frustration themes, each backed by review evidence.

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Competition

Competitive landscape for DET - Duolingo English Test

How's the Education market?

DET maintains a niche position in the education category, with rankings fluctuating across global markets. The reliance on high-stakes, single-purchase certification creates a high-pressure environment where technical stability directly impacts revenue and brand trust.

Read the market outlook

The rivals identified

IELTS Prep App
IELTS Prep Appactive nemesis

By British Council

Direct competitor in the high-stakes English proficiency certification market with a focus on remote/digital testing preparation.

DET - Duolingo English Test vs IELTS Prep App

Unlock the deeper market read.

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The Analyst's Read

Key takeaways for DET - Duolingo English Test

Where is it heading?

The remote-proctoring market is consolidating around reliability, as institutions prioritize test integrity over cost. DET's maintenance-mode cadence leaves it exposed to rivals that can offer a more stable, error-free testing environment, which will likely accelerate churn toward traditional testing centers if stability is not addressed.

  • Persistent technical instability during exams erodes the value of the certification, as users cannot rely on the platform for high-stakes outcomes.
  • The 183-day release gap signals a shift to maintenance-only mode, leaving the platform vulnerable to competitors that offer more reliable remote-proctoring infrastructure.

The SWOT

Core Strengths
  • 6,000+ institutional partnerships create a high barrier to entry
Critical Frictions 1 weakness inside
Growth Levers
  • Implementing free-retake policy for technical failures would neutralize predatory monetization narrative
Market Threats 1 threat identified

Next best moves

1 Invest · 1 Pivot · 1 Maintain

Audit camera-driver compatibility because technical instability is the #1 churn driver → reduce forced-retake frequency

+ 2 more prioritized moves

The counter-intuitive read

The platform's institutional trust is its greatest liability…

Read the full take

Since the last report: The platform has transitioned into a maintenance-only development cycle, resulting in a decline in user sentiment due to unresolved technical failures during high-stakes exams. This shift from a free utility to a paid, high-pressure certification model has created significant reputational risk.

Bottom line

Technical instability during high-stakes exams invalidates the core value proposition of a secure, remote certification. Addressing the camera-malfunction errors is the only path to preventing a permanent shift of the user base toward traditional testing centers.

Unlock 1 critical friction, 1 market threat, 2 more prioritized moves and the analyst’s take.

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FAQ

Is the Duolingo English Test accepted by all universities?
The test is accepted by over 6,000 institutions globally, but users should verify specific requirements with their target university before purchasing.
How does the Duolingo English Test compare to TOEFL or IELTS?
The Duolingo English Test is a digital-first, remote-proctored exam that is generally lower-cost and more flexible than traditional physical tests like TOEFL or IELTS.
Is the Duolingo English Test safe for my computer?
The app requires access to your camera and screen recording to ensure test integrity. Users have reported technical issues, but the app is a standard proctoring tool.
What is a reliable alternative to the Duolingo English Test?
For users requiring high reliability, traditional physical testing centers for TOEFL or IELTS remain the standard, despite higher costs and less flexible scheduling.

Sources

  1. [1] App Store, source
  2. [2] Developer website, source

Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by DET - Duolingo English Test, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

What's new

The platform has transitioned into a maintenance-only development cycle, resulting in a decline in user sentiment due to unresolved technical failures during high-stakes exams. This shift from a free utility to a paid, high-pressure certification model has created significant reputational risk.

shifted

Pricing Model Reclassification

declined

Emergence of Critical Technical Complaints

added

Strategic SWOT Update

Cite this report

Marlvel.ai. “DET - Duolingo English Test Intelligence Report.” Updated Jul 30, 2026. https://marlvel.ai/apps/det-duolingo-english-test

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