Cookie Notice

Katwars uses one cookie. It is strictly functional — without it, the voting loop and your kitten ownership would not work. Because we do not use any tracking, advertising, or analytics cookies, we do not show a cookie-consent banner. We do use a cookieless, privacy-friendly analytics tool (Umami) that sets no cookies — see the Privacy Policy for what it collects.

The cookie

• Name: kw_did
• Type: First-party, functional only.
• Contents: A random device identifier plus an HMAC signature so the server can verify the cookie was issued by us. No personal information.
• Purpose:
  • Recognise your kitten as “yours” on this device.
  • Deduplicate votes from the same device.
  • Power the silent “don’t show me kittens I reported” filter without leaking that filter to other users.
• Lifetime: Persistent (no expiry set by the browser policy). You can clear it via your browser’s privacy controls at any time. If you do, your existing kittens will appear “not yours” on this device until you re-claim them with the claim code you received at upload.
• Third-party sharing: None.

What about local storage / IndexedDB?

We also use the browser’s localStorage and IndexedDB to:

• Cache the next 1–3 pairs so the voting loop feels instant.
• Queue votes that didn’t send (e.g. you went offline) for retry the next time you load the site.
• Persist a recovery copy of your claim codes so you can reclaim a kitten if the device cookie is cleared.

These are not cookies and are not transmitted to our servers unless explicitly used (e.g. when a queued vote is replayed).

Questions

Email privacy@katwars.com. See also the Privacy Policy.