Duolingo keeps your personal data for as long as needed to run its services, and says it will delete or anonymize data when it is no longer needed.
Without specific retention periods stated for different data types (especially voice recordings and behavioral data), users cannot meaningfully assess their exposure or predict when their data will be removed from Duolingo's systems.
Cross-platform context
See how other platforms handle Data Retention Policy and similar clauses.
Compare across platforms →Vague retention language ('as long as necessary') without specific timeframes makes it difficult for users to know how long their data — including voice recordings — is kept, and limits the practical value of deletion rights.
REGULATORY FRAMEWORK: GDPR Art. 5(1)(e) requires data be kept 'no longer than necessary' with specific retention periods documented — vague retention policies violate this storage limitation principle. CCPA does not mandate specific retention periods but requires disclosure of retention practices in the privacy notice per CPRA amendments. FTC Act Section 5 covers deceptive retention practices. Primary enforcers: EU DPAs, CPPA, FTC.
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