Cookies and storage
Last updated 28 October 2026
The short version
DuelMetric does not use advertising, analytics or tracking cookies, and we don't sell or share data for marketing. We only store what's needed to keep you signed in and to remember the competition you last looked at.
What we store
sb-…-auth-token
- Type
- Strictly necessary
- Where
- Your browser's local storage
- Why
- Keeps you signed in. Only created if you sign in.
- How long
- Until you sign out
dm-league
- Type
- Functional (set only when you pick a competition)
- Where
- Your browser's local storage
- Why
- Remembers the competition you last chose, so pages open on it.
- How long
- Until you clear it (button below)
__cf_bm and similar
- Type
- Strictly necessary (security)
- Where
- Cookie set by our hosting provider (Cloudflare)
- Why
- Protects the site from automated abuse. We don't read or control it.
- How long
- Up to 30 minutes
Strictly necessary storage doesn't need your consent under UK and EU rules because the site can't work securely without it. The competition preference is only saved when you choose a competition yourself.
Other services your browser contacts
These don't place cookies through our site, but like any web request they receive your IP address.
- Google Fonts: Supplies the site's typefaces. Your browser requests them from Google, which receives your IP address.
- API-Football (api-sports.io): Serves team badges and player photos. Your browser requests the images from their servers, which receive your IP address.
Your choices
You can delete everything from your browser's settings ("clear site data"). Doing so signs you out. To forget just your saved competition:
For how we handle account details, see our privacy policy.