Useful storage. Clear choices.
Account and security storage
Firebase Authentication maintains sign-in state using browser technologies such as IndexedDB or local storage. This lets the app restore your session and obtain authentication tokens for API requests. It is used for the sign-in service you request, rather than advertising.
Theme preferences
The app remembers your selected light, dark, or system theme in local storage. This preference does not contain a lab solution or payment-card information. Clearing it resets the display preference.
Optional tracking
No optional advertising or analytics trackers are enabled in this release. Cookie settings in the footer explain the current storage categories. We do not display consent switches for tracking that is not running. If optional tracking is added, the notice and controls must be updated before it is enabled.
Your browser and payment pages
You can sign out and manage stored site data in your browser. Blocking authentication storage can prevent sign-in or session restoration. Stripe-hosted checkout has its own storage and privacy information. Clearing cookies or local storage does not cancel a subscription or delete server-side account data.