Privacy Policy
Last updated: April 6, 2026
BSR Finder ("we", "our", or "the extension") is a Chrome extension that displays Amazon book sales estimates and royalty data. This policy explains what data we collect and how we use it.
What data we collect
- Email address — collected when you subscribe or log in, used solely to authenticate your account and verify your subscription status.
- Authentication token — stored locally in your browser (chrome.storage) to keep you logged in between sessions.
- Amazon page data — the extension reads publicly visible data on Amazon pages (BSR, price, page count) to calculate estimates. This data is processed locally in your browser and is never sent to our servers.
What we do not collect
- We do not collect your browsing history.
- We do not track which Amazon pages you visit.
- We do not sell or share your data with third parties.
- We do not use your data for advertising.
Third-party services
- Stripe — used to process payments. Stripe's privacy policy applies to payment data.
- Supabase — used to store your account and subscription status securely.
Data retention
Your account data is retained as long as you have an active subscription. You can request deletion of your data at any time by contacting us.
Contact
For any privacy-related questions, contact us at: bsrfinder@gmail.com