Last updated: 17 July 2026
Marrow (“the app”) is a learning app that shows a feed of short concept cards. This policy explains what data the app handles. The short version: Marrow does not collect, transmit, or share any personal data.
None. Marrow does not require an account, does not ask for any personal information, and does not include analytics, advertising, or third-party tracking software.
Your learning progress, which cards you have seen and how you graded them, is stored locally on your device in an on-device database. This information never leaves your device, is not sent to us or anyone else, and is removed if you delete the app.
All content ships inside the app. Marrow does not make network requests to load cards or to report usage.
Marrow does not collect personal information from anyone, including children.
If this policy changes, the updated version will be posted on this page with a new “last updated” date.
Questions about this policy? Contact the developer at pratyushsaxena4@gmail.com.