Key Facts
What may Duolingo generate, record, and store?
Duolingo may generate, record, and store audio recordings or transcripts of text and audio you submit, and use them for product improvement and personalization purposes, including training and running Duolingo's own artificial intelligence models.
How may Duolingo use audio recordings or transcripts?
Duolingo may generate, record, and store audio recordings or transcripts of text and audio you submit, and use them for product improvement and personalization purposes, including training and running Duolingo's own artificial intelligence models.
What may be shared when you interact with Video Call or other AI-enabled features?
When you interact with Video Call or other AI-enabled features, the text and audio you submit may be shared with AI vendors such as OpenAI and Google.
With whom may the text and audio you submit be shared?
When you interact with Video Call or other AI-enabled features, the text and audio you submit may be shared with AI vendors such as OpenAI and Google.
What do Duolingo's agreements with AI vendors prohibit?
Duolingo's agreements with its AI vendors prohibit those vendors from using any personal information for their own purposes.
What does Duolingo collect personal information from children under 13 for?
Duolingo collects personal information from children under the age of 13 for the sole purpose of performing internal operations of the Service.
Are advertisements served to child users personalized?
Advertisements served to child users are non-personalized and set to family-safe content.
What may Duolingo process and share personal information for?
Duolingo may process and share your personal information for the purpose of providing you with personalized advertising, working with marketing analytics service providers such as Unity, Meta, LiftOff, Pangle, Moloco, and Google.
With whom may Duolingo share personal information for personalized advertising?
Duolingo may process and share your personal information for the purpose of providing you with personalized advertising, working with marketing analytics service providers such as Unity, Meta, LiftOff, Pangle, Moloco, and Google.
Is your Duolingo profile public by default?
By default, your Duolingo profile is public and visible to other Duolingo users and anyone else on the Internet.
Summary
Duolingo's Privacy Policy describes what personal information Duolingo collects about you and how it uses, stores, and shares it. By using Duolingo, you agree that it may record what you type or say, use that to train its own AI, and share your information with advertising partners like Meta and Google for personalized ads. Your profile is public by default, and if you join a classroom, your teacher gains significant access to your account including the ability to log in as you.
Analysis
Duolingo's Privacy Policy establishes the terms under which Duolingo collects, retains, uses, and shares personal information submitted by users of its Service. The policy permits Duolingo to record and store user-submitted text and audio for product improvement and AI model training, and to share that content with named third-party AI vendors (OpenAI, Google) subject to contractual restrictions barring those vendors from using personal information for their own purposes. For adult users, Duolingo may share personal information with named marketing analytics providers (Unity, Meta, LiftOff, Pangle, Moloco, Google) for personalized advertising, enabled in part through third-party Targeting Cookies from Google, Meta, Amazon, and others that track users across multiple websites. Children under 13 receive distinct treatment: data collected from them is limited to internal operations, third-party behavioral tracking is disabled, and advertisements served to them are non-personalized and restricted to family-safe content. User profiles default to fully public visibility, and in classroom contexts teachers are granted the ability to view account credentials, reset passwords, and log in as the student.
What this means for you
For an ordinary user, this document means that using Duolingo constitutes agreement to broad data collection and sharing practices, including the use of text and audio you submit to train Duolingo's proprietary AI models and the sharing of that content with third-party AI vendors. Your personal information may also be shared with multiple named marketing analytics companies for personalized advertising, and third-party Targeting Cookies placed through Duolingo may track your activity across other websites. Your profile is visible to everyone on the internet by default — you can adjust your profile visibility settings to limit this public exposure. Children under 13 receive stronger protections: their data is used only for internal operations, behavioral tracking by third parties is disabled, and they see only non-personalized, family-safe ads.
3 important changes detected
5 versions captured · Last updated: May 2026
What changed
Duolingo modified its audio collection and sharing policy on May 27, 2026. Previously, the policy stated that audio sharing for product improvement could be declined on iOS devices specifically, and that Android users and website users were not subject to audio collection for this purpose. The updated policy removes the device-specific distinction and the explicit statement that Android and website users are excluded, stating instead that all users may choose not to share audio for product improvement within app Settings. This change broadens the stated scope of audio collection to potentially include all platforms, while simultaneously offering a uniform opt-out mechanism.
Why this matters
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.
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What changed
Duolingo added three sentences to its privacy policy on May 5, 2026, disclosing that the website uses cookies to enhance user experience and analyze performance, shares user information with social media, advertising, and analytics partners, and provides cookie control options including 'Do Not Sell My Personal Information', 'Reject All', and 'Accept Cookies' buttons. Previously, the policy did not explicitly describe these cookie uses or provide these specific control mechanisms. The updated language makes cookie usage and data sharing partnerships more transparent and establishes user-facing controls for cookie preferences.
Why this matters
The updated policy now explicitly states that Duolingo uses cookies to enhance user experience and analyze website performance, and shares user information about site usage with social media, advertising, and analytics partners. The policy also introduces user-facing controls allowing users to review, reject, or accept cookies and to opt out of personal information sales. These additions make data handling practices more transparent but do not materially change what data is collected, only how the collection is disclosed and what control mechanisms are available.
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April 21, 2026
medium
Duolingo updated its privacy policy on April 21, 2026 to add details about a new Math Tutor AI feature and to modify how audio and transcript data are handled. For …
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Archival ProvenanceSource & Archival Record
Last Captured
May 27, 2026 00:13 UTC
Capture Method
Automated scheduled archival capture
Document ID
CA-D-000084
Version ID
CA-V-002995
SHA-256 (extracted text; extractor version not recorded, so this hash may not reproduce today)
ffd79e13b1f23d8f50cc63af7c7e06fe3d89fe994f3f6c441c5f01a292a571ad
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