Version History

• May 27, 2026 v1 medium
  Duolingo removed three sentences from its privacy policy on May 27, 2026. The removed language disclosed that the website uses cookies to enhance user experience and analyze performance, that Duolingo shares user information with social media, advertising, and analytics partners, and a button labeled 'Do Not Sell My Personal Information'. The removal of these explicit disclosures means the policy no longer contains these particular statements about cookie use and data sharing partnerships.
  · -3 removed
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• May 27, 2026 v1
  Duolingo updated their Duolingo Privacy Policy on May 27, 2026. Change detected: 1 sentence(s) removed, 3 sentence(s) modified. Document contained 221 sentences after update.
  · -1 removed · 3 modified
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• May 5, 2026 v1 low
  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.
  +3 added
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• April 21, 2026 v1 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 Math Tutor, audio is shared with Apple for speech recognition and then deleted, while text transcripts may be retained and shared with AI vendors. The policy also added language clarifying that IP addresses may be retained longer for payment processing and fraud prevention when users have paid subscriptions.
  +5 added · 12 modified
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• April 18, 2026 v1
  Initial snapshot — monitoring begins
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