This analysis describes what Duolingo's agreement states, permits, or reserves. It does not constitute a legal determination about enforceability. Regulatory applicability and practical outcomes may vary by jurisdiction, enforcement context, and individual circumstances. Read our methodology
This means your Duolingo learning behavior and device identifiers are being shared with major ad platforms, enabling cross-site tracking profiles that extend far beyond the Duolingo app itself.
The updated policy now discloses a new Math Tutor feature that processes audio through Apple for transcription; audio is deleted but text transcripts may be retained and shared with AI vendors. Duolingo also clarified that IP addresses may be retained longer than 30 days for paying subscribers specifically for payment processing and fraud prevention. The policy changed the Video Call feature from 'Duolingo offers' to 'Duolingo may offer', clarifying it is optional. You can disable FullStory and Session Replay activity recording using the Tracking toggle in app Settings.
View change record →The policy establishes that personal data collected during account creation and lesson activity is processed for service delivery and shared with designated advertising and analytics partners for targeted advertising and analytics purposes. Users in California may submit requests to opt out of personal data sales or sharing for cross-context behavioral advertising. Users in the EU and UK may submit requests to access, correct, delete, or port their personal data through specified channels.
How other platforms handle this
We use cookies, web beacons, pixel tags, and other tracking technologies to collect information about your use of our website and Service, including your browser type, referring URL, pages visited, and time spent on pages. We may use this information to analyze trends, administer the site, track use...
We and our third-party partners may use cookies, web beacons, and similar tracking technologies to collect information about your use of the Sites. Cookies are small data files stored on your browser or device. We use both session cookies and persistent cookies. We may also use web beacons, pixel ta...
cookie data, resettable device identifiers, advertising identifiers and other unique identifiers (described below in the section "Cookies and other Technologies").
Monitoring
Duolingo has changed this document before.
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"We use third-party analytics and advertising services, including Google Analytics and Facebook, to help us understand how users engage with our services and to deliver relevant advertising. These third parties may use cookies, web beacons, and similar technologies to collect information about your use of our services and other websites.— Excerpt from Duolingo's Duolingo Privacy Policy
Netflix updated its Privacy Statement on April 18, 2026, disclosing voice recording collection and expanded household ad profiling for the first time.
Google's Privacy Policy covers Search, Gmail, YouTube, Maps, and every site running Google Analytics. Here is what it actually authorizes.
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This means your Duolingo learning behavior and device identifiers are being shared with major ad platforms, enabling cross-site tracking profiles that extend far beyond the Duolingo app itself.
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