Cookies and storage
Last reviewed: 10 Aug 2026
This text is a template. Before you publish it, read it through and fill in your own details: who is responsible for the data, where it is hosted and how long you keep it. It is no substitute for proper legal advice.
What we keep in your browser
- Session cookie
- Needed to keep you signed in while you use the dashboard or your card. It goes when you sign out.
- The “remember me” cookie
- Optional. Saves you asking for a new code every time. It expires after 30 days.
- Local storage
- Holds preferences such as light or dark theme. It never leaves your device.
- App cache
- If you add the card to your home screen, a copy is stored so you can show it with no signal.
What we don't do
We don't use advertising or cross-site tracking cookies, and we don't share your browsing with anyone. That's why you won't see a cookie banner asking for permission: everything we store is needed to make the service work.
How to clear them
Your browser settings let you clear the cookies and storage for this site. If you do, you'll have to ask for an access code again.
Questions about this text? Get in touch and we'll tell you exactly what we store. You can also read the terms, the privacy policy and the cookie notice.