Cookies and local storage
Last updated: 13 August 2026
This page lists what Blur stores on your device. It is a short list, because we run no analytics and no advertising.
1. No tracking cookies
Blur uses no advertising cookies, no third-party analytics such as Google Analytics, and no tracking pixels.
There is nothing to accept or refuse, which is why you see no cookie banner: there is no optional processing to authorise.
2. What we actually store
Session data: once you sign in, the app keeps your identifier, name and email on your device so it does not ask for your password every time. They stay until you sign out.
Language preference: the language you pick, so it is still there when you come back.
The web app's technical cache: your browser keeps the app's files (code and fonts) so it does not download them again on every visit.
Authentication: Firebase, the Google service handling sign-in, also keeps a session token on the device. Without it you would retype your password at every launch.
3. How to clear them
Signing out from the app removes the session data.
Clearing the site data in your browser settings removes everything else, including the technical cache.
None of this is shared with third parties for commercial purposes.
This page describes the situation verified on the date shown. If analytics or advertising tools are introduced later, a consent banner will be required and this text must be updated.