Privacy policy

Last updated: September 21, 2026

TREBASE (“the app”) respects your privacy and is committed to protecting personal information. This policy explains the data the app collects and uses.

01 / Data we collect

Email address — Used for account registration and authentication. Card registration information — Portfolio data you enter, including card names, prices, grading information and quantities.

02 / How we use data

• Creating and authenticating accounts • Providing portfolio management features • Retrieving and updating card prices

03 / Third-party services

The app uses the following third-party services. Supabase — Our database and authentication provider, which processes email addresses and registered data. eBay API — Used to retrieve card prices. Only search queries are sent; they do not contain personal information. Cloudflare R2 — Used to deliver card images.

04 / Data storage

Your data is stored in Supabase (cloud). Access controls restrict access to your own data.

05 / Cookies and tracking

The app does not use cookies or tracking tools.

06 / Deleting your data

You can delete your account in the app’s Settings. Deleting your account permanently deletes all associated data, including your registered card data. This cannot be undone.

07 / Contact

For questions about privacy, please contact us at: info@trebase.app