Cookie Policy
Last updated · May 25, 2026
Cipher keeps cookies to a minimum: a small set of essential cookies to keep you signed in, plus a local setting for your theme. Our analytics are cookieless and we run no advertising trackers.
1. What cookies are
Cookies are small files a website stores in your browser. Related technologies like localStorage store small settings on your device. Below is everything Cipher uses and why.
2. Essential cookies (sign-in)
When you sign in with Google, our authentication layer sets a small number of strictly necessary cookies — a session token, a CSRF-protection token, and a callback URL. These exist only to keep you securely signed in and to protect the sign-in flow. The Service cannot function without them, so they are not subject to consent. They are not used for tracking or advertising.
3. Preference storage (theme)
We remember your light/dark theme choice using a cipher-theme entry in your browser’s localStorage. This stays on your device, is not sent to our servers, and is not used to identify you.
4. Analytics (cookieless)
We use Vercel Analytics to understand aggregate, anonymous usage such as which pages are visited. It is cookieless — it does not set tracking cookies, does not store personal identifiers, and does not follow you across other websites.
5. No advertising or cross-site trackers
Cipher does not use advertising cookies, third-party marketing pixels, or cross-site tracking technologies of any kind.
6. Controlling cookies
You can block or delete cookies through your browser settings. Because our only cookies are essential to sign-in, blocking them will prevent you from logging in and using account features, but you can still browse public pages.
7. Contact
For more on how we handle data, see our Privacy Policy, or email tjameswalsh@icloud.com.