Cookie Policy
Last updated: 19 July 2026
Simplicity uses very few cookies. We don't use advertising or cross-site tracking cookies at all.
The short version
We use onecookie, and it exists so you stay logged in. Everything else we store — your theme, ambient preferences — stays in your browser's local storage and is never sent to us or to anyone else.
Strictly necessary cookies
These are required for the service to work. They can't be switched off, because without them you couldn't sign in.
| Name | Type | Purpose | Expires |
|---|---|---|---|
| sid | Cookie (httpOnly) | Keeps you signed in. Contains a random token only — no personal data. It can't be read by JavaScript. | 30 days, extended while you keep using the app |
Preferences stored on your device
These are stored in your browser's local storage, not as cookies. They never leave your device, and clearing your browser data removes them.
| Key | Type | Purpose | Expires |
|---|---|---|---|
| sx-consent | Local storage | Remembers your cookie choice so we stop asking. | 12 months |
| sx-bg-theme | Local storage | Your chosen background animation. | Until cleared |
| sx-night / sx-auto-night | Local storage | Night-mode preference and whether it follows the clock. | Until cleared |
| sx-auto-morning | Local storage | Whether the morning ambient tint is enabled. | Until cleared |
What we don't use
No advertising cookies. No cross-site tracking. No third-party analytics or marketing pixels. We don't sell or share your browsing behaviour.
Managing your choices
You can change your choice at any time, or clear cookies and site data from your browser settings. Note that clearing the sid cookie will sign you out.
More information
See our Privacy Policy for how we handle personal data more broadly.