Is Duolingo Language Lessons Safe?
Duolingo Language Lessons — Nerq Trust Score 62.0/100 (C+ grade). Score based on 2 independent trust signals. Last analyzed: 2026-04-12
Duolingo Language Lessons is a iOS app with a Nerq Trust Score of 62.0/100 (C+), based on 3 independent data dimensions. Last analyzed: 2026-04-12 Security: 70/100. Popularity: 75/100. Data sourced from App Store metadata, privacy labels, permissions analysis, and developer history. Last updated: 2026-04-12. Machine-readable data (JSON).
Is Duolingo Language Lessons safe?
Trust Score Breakdown — Duolingo Language Lessons has a Nerq Trust Score of 62.0/100 (C+). Measured across 2 independent trust signals (as of 2026-04-12).
What is Duolingo Language Lessons's trust score?
Duolingo Language Lessons has a Nerq Trust Score of 62.0/100, earning a C+ grade. This score is based on 2 independently measured dimensions including security, maintenance, and community adoption.
What are the key security findings for Duolingo Language Lessons?
Duolingo Language Lessons's strongest signal is popularity at 75/100. No known vulnerabilities have been detected.
What is Duolingo Language Lessons and who maintains it?
| Author | Duolingo, Inc |
| Category | iOS Apps |
| Source | N/A |
Duolingo Language Lessons Across Platforms
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Safety Guide: Duolingo Language Lessons
What is Duolingo Language Lessons?
Duolingo Language Lessons is a iOS app — Learn a new language with the world’s most-downloaded education app! Duolingo is the fun, free app for learning 40+ languages through quick, bite-sized lessons. Practice speaking, reading, listening, .
How to Verify Safety
Check App Store privacy labels. Review permissions. Look up developer.
You can also check the trust score via API: GET /v1/preflight?target=Duolingo - Language Lessons
Key Safety Concerns for iOS app
When evaluating any iOS app, watch for: excessive permissions, data collection, in-app purchases, age appropriateness.
Measured Signals
Duolingo Language Lessons has a Nerq Trust Score of 62/100 (C+). This score is a composite of automated measurements of security, maintenance, community, and quality signals.
Key Takeaways
- Duolingo Language Lessons has a Trust Score of 62/100 (C+).
- The score is a measured composite — it is not a suitability judgment. Evaluate the individual signals against your own requirements.
- Query the current measured values via the Nerq API.
Detailed Score Analysis
| Dimension | Score |
|---|---|
| Security | 70/100 |
| Maintenance | 60/100 |
| Popularity | 75/100 |
| Quality | 50/100 |
| Community | 50/100 |
Based on 5 dimensions. Data from App Store metadata, privacy labels, permissions analysis, and developer history.
What data does Duolingo Language Lessons collect?
Duolingo Language Lessons is published by Duolingo, Inc on App Store, with approximately 5,027,973 downloads.
Privacy score: 65/100. Users should review the app's privacy labels (available on the App Store listing) to understand what data categories are collected, including identifiers, usage data, and location information.
Before granting permissions, check whether the app requests access to camera, microphone, contacts, or location — and whether each permission is necessary for the app's core functionality.
Full analysis: Duolingo Language Lessons Privacy Report · Privacy review
Is Duolingo Language Lessons secure?
Security score: 70/100 (0-100, higher = fewer measured security issues).
Nerq monitors this entity against NVD, OSV.dev, and registry-specific vulnerability databases for ongoing security assessment.
Full analysis: Duolingo Language Lessons Security Report
Duolingo Language Lessons Across Platforms
Same developer/company in other registries:
How we calculated this score
Duolingo Language Lessons's trust score of 62.0/100 (C+) is computed from App Store metadata, privacy labels, permissions analysis, and developer history. The score reflects 5 independent dimensions: security (70/100), maintenance (60/100), popularity (75/100), quality (50/100), community (50/100). Each dimension is weighted equally to produce the composite trust score.
Nerq analyzes over 7.5 million entities across 26 registries using the same methodology, enabling direct cross-entity comparison. Scores are updated continuously as new data becomes available.
Signals last measured on April 12, 2026. Data version: 1.0.
Full methodology documentation · Machine-readable data (JSON API)
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Disclaimer: Nerq trust scores are automated measurements based on publicly available signals. They are not endorsements, verdicts, or guarantees of suitability. Always evaluate the signals against your own requirements.