Flipwatch

Privacy Policy

Effective July 14, 2026

At a glance

Your data is never sold, rented, or shared for advertising.
No analytics, no tracking pixels, no access to your browsing or page content.
We collect only what the service needs to run: your account and what you ask it to watch.
Delete your account and all of its data any time by emailing us.

Flipwatch is a browser extension that monitors eBay listings matching searches you save and alerts you when new ones appear. This page describes what data Flipwatch handles, why, and where it lives.

Data we store on our servers

What	Why	Notes
Email & password	Signing you in; contacting you about your account	Password is stored only as a salted hash
Saved searches	The keywords, price ranges, and filters we search on your behalf	The core of the service
Saved items	Listings you save, auction reminders you arm, portfolio records you enter	Synced so they survive reinstalls and devices
Usage counters	A per-day request count that enforces plan limits	Deleted automatically after 30 days
Subscription status	Your plan tier and billing state	Payments are processed by Stripe — we never see your card number

Data that stays on your device

Your sign-in session, a cache of recent listings for the feed, and notification preferences are stored locally in your browser's extension storage. They never leave your device except to authenticate requests to our own servers, and they're removed when you sign out or uninstall the extension.

What we don't do

No selling or renting of your data, ever.
No advertising, third-party analytics, or tracking of any kind.
No reading of your browsing history or the content of pages you visit — the extension has no access to any website's content.
No use of your data for creditworthiness or lending decisions.

Service providers

Flipwatch runs on a small number of processors, each receiving only what its role requires:

Supabase hosts our database, authentication, and API.
Stripe processes subscription payments under its own privacy policy.
eBay receives your search keywords and filters — never your identity — when we run searches through the official eBay Browse API.

Retention and deletion

Your data is kept while your account is active. To delete your account and everything associated with it, email us at the address below; deletion completes within 30 days. Seen-listing history and usage counters are also pruned automatically on a rolling basis.

Security

All traffic is encrypted in transit. Data is isolated per account with database row-level security, and passwords are stored only as salted hashes.

Children

Flipwatch is not directed at children under 16, and we do not knowingly collect their data.

Changes

If this policy changes materially, we'll update this page and the effective date above.