Is Duolingo Language Lessons Safe?
Use Duolingo Language Lessons with some caution. Duolingo Language Lessons is an iOS app with a Nerq Trust Score of 62.0/100 (C+), based on 3 independent data dimensions. It is below the recommended threshold of 70. Security: 70/100. Popularity: 75/100. Data sourced from App Store metadata, privacy labels, permissions analysis, and developer history. Last updated: 2026-03-25. Machine-readable data (JSON).
Is Duolingo Language Lessons safe?
CAUTION — Duolingo Language Lessons has a Nerq Trust Score of 62.0/100 (C+). It has moderate trust signals but shows some areas of concern that warrant attention. Suitable for development use — review security and maintenance signals before production deployment.
Trust Score Breakdown
Key Findings
Details
| Author | Duolingo, Inc |
| Category | ios |
| Source | N/A |
Duolingo Language Lessons Across Platforms
Same developer/company in other registries:
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 apps
When evaluating any iOS app, watch for: excessive permissions, data collection, in-app purchases, age appropriateness.
Trust Assessment
Duolingo Language Lessons has a Nerq Trust Score of 62/100 (C+) and has not yet reached Nerq trust threshold (70+). This score is based on automated analysis of security, maintenance, community, and quality signals.
Key Takeaways
- Duolingo Language Lessons has a Trust Score of 62/100 (C+).
- Review carefully before use — below trust threshold.
- Always verify independently using the Nerq API.
Detailed Score Analysis
| Dimension | Score |
|---|---|
| Security | 70/100 |
| Privacy | 65/100 |
| Reliability | 80/100 |
| Transparency | 50/100 |
| Maintenance | 60/100 |
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. This meets the recommended security threshold for production use.
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), privacy (65/100), reliability (80/100), transparency (50/100), maintenance (60/100). 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.
This page was last reviewed on March 25, 2026. Data version: 1.0.
Full methodology documentation · Machine-readable data (JSON API)
Frequently Asked Questions
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Disclaimer: Nerq trust scores are automated assessments based on publicly available signals. They are not endorsements or guarantees. Always conduct your own due diligence.