Is Duolingo: Language Lessons Safe?
Duolingo: Language Lessons — Nerq Trust Score 66.0/100 (B- grade). Score based on 2 independent trust signals. Last analyzed: 2026-04-12
Duolingo: Language Lessons is a Android app with a Nerq Trust Score of 66.0/100 (B-), based on 3 independent data dimensions. Last analyzed: 2026-04-12 Security: 70/100. Popularity: 95/100. Data sourced from Google Play metadata, Data Safety section, Exodus Privacy tracker analysis, and user ratings. 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 66.0/100 (B-). 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 66.0/100, earning a B- 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 95/100. No known vulnerabilities have been detected.
What is Duolingo: Language Lessons and who maintains it?
| Author | Duolingo |
| Category | Android Apps |
| Source | N/A |
Duolingo: Language Lessons Across Platforms
Same developer/company in other registries:
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Safety Guide: Duolingo: Language Lessons
What is Duolingo: Language Lessons?
Duolingo: Language Lessons is a Android app — Learn Spanish, French, German, English, Math, Music, Chess and more for free..
How to Verify Safety
Review Data Safety section in Google Play. Check permissions and ad trackers.
You can also check the trust score via API: GET /v1/preflight?target=Duolingo: Language Lessons
Key Safety Concerns for Android app
When evaluating any Android app, watch for: excessive permissions, data collection, ad trackers, background data usage.
Measured Signals
Duolingo: Language Lessons has a Nerq Trust Score of 66/100 (B-). 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 66/100 (B-).
- 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 | 95/100 |
| Quality | 50/100 |
| Community | 50/100 |
Based on 5 dimensions. Data from Google Play metadata, Data Safety section, Exodus Privacy tracker analysis, and user ratings.
What data does Duolingo: Language Lessons collect?
Duolingo: Language Lessons is published by Duolingo on Google Play, with approximately 841,474,999 downloads.
Privacy score: 65/100. Users should review the app's privacy labels (available on the Google Play 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 66.0/100 (B-) is computed from Google Play metadata, Data Safety section, Exodus Privacy tracker analysis, and user ratings. The score reflects 5 independent dimensions: security (70/100), maintenance (60/100), popularity (95/100), 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.