Cookie policy

Last updated: November 14, 2026

Cookies are small files a website stores in your browser. There are also similar ways of storing data on your device ("local storage"). Here is what Notafilia uses.

In short: we only use technical cookies and storage, needed for the website and app to work or to remember your preferences. We do not use advertising or tracking cookies, and we do not share data with social networks. That is why we do not show you a banner to accept them: under Article 22.2 of the Spanish LSSI, strictly necessary cookies do not require consent.

On the website (notafilia.es)

  • NEXT_LOCALE (first-party cookie, 1 year): remembers the language you choose.
  • theme (local storage): remembers whether you prefer light or dark mode.

Cookieless statistics. We count visits with Vercel Web Analytics, which uses no cookies and stores no data that identifies you: only aggregate figures (pages viewed, country, device type).

Error reports. If something breaks, Sentry receives a technical report without personal data. To group the errors of a single visit it may store a temporary identifier in session storage, which is deleted when you close the tab.

In the app (app.notafilia.es)

In addition to the above:

  • Session cookies (better-auth.*, first-party, up to 30 days): keep you securely signed in. Without them you could not access your account.
  • sidebar-collapsed (first-party cookie, 1 year): remembers whether the side menu is collapsed.
  • Preferences (local storage, for example notafilia:bigText): remembers options such as "Large text".
  • Offline mode (local storage and browser cache): stores your collection, the app's pages and the banknote images on your device so that "Do I have it?" works with no signal. This copy stays on your device; you can delete it at any time by clearing the site's data in your browser.

How to delete or block them

You can delete or block cookies and local storage in your browser settings. If you block session cookies, you will not be able to sign in to the app. Guides for the most common browsers: Chrome, Safari, Firefox, Edge.

Changes

If we ever use cookies that need your consent (for example, analytics with cookies), we will ask you first with a notice and update this policy.

Any questions: rafafcantero@gmail.com. More information in the Privacy policy.

The Spanish version of this text prevails in case of discrepancy.