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
The clause establishes a contractual restriction on AI vendors' use of personal information, limiting their use to Duolingo's purposes rather than the vendors' own.
Interpretive note: The clause states a contractual outcome ('Duolingo's agreements mean they are not permitted') but the enforceability and scope of those agreements are not described. The clause does not specify what 'their own purposes' excludes or includes beyond the quoted language.
The updated privacy policy no longer contains explicit language stating that Duolingo uses cookies to enhance user experience and analyze performance, or that it shares user information with social media, advertising, and analytics partners. The policy also no longer displays a 'Do Not Sell My Personal Information' button. These removals may affect the transparency of Duolingo's practices as disclosed in the policy document itself, though actual data practices may remain unchanged. Users should review the complete updated privacy policy to understand current disclosures about data collection and sharing.
View change record →The updated policy removes explicit language stating that Android users and website users are not subject to audio collection for product improvement purposes. Previously, the policy authorized audio collection only from iOS users, with an explicit carve-out for Android and web users. The revised language now states that all users may choose not to share audio within app Settings, suggesting audio collection may now occur across all platforms unless the opt-out mechanism is used. The practical operational effect of this change depends on whether Duolingo implements audio collection on Android and web platforms, which the policy change does not explicitly confirm. You can decline audio sharing for product improvement by adjusting the setting within the app.
View change record →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 →AI vendors who receive your data through Duolingo are contractually prohibited from using that personal information for their own purposes.
How other platforms handle this
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We may infer certain information from your interactions with the Lyft Platform and other personal information available to us. For example, if you frequently ride to or from airports, we may infer you are a frequent traveler.
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"Duolingo's agreements with these AI vendors mean they are not permitted to use any personal information for their own purposes.— Excerpt from Duolingo's Duolingo Privacy Policy
We read the privacy policies and terms of service of 38 AI platforms. Here is what they say about training, retention, arbitration, and liability.
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The clause establishes a contractual restriction on AI vendors' use of personal information, limiting their use to Duolingo's purposes rather than the vendors' own.
AI vendors who receive your data through Duolingo are contractually prohibited from using that personal information for their own purposes.
ConductAtlas has identified this type of provision across 277 platforms. See the full comparison.
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