legal.cookies
Cookie Policy
Last updated 7 October 2026
1. What this covers
This policy explains the cookies and similar browser storage used by Mathora. It should be read with our Privacy Policy.
2. What we use
We use only what the service needs to work. We do not use advertising cookies. We measure traffic and page speed with Vercel Web Analytics and Speed Insights, which do not use cookies or local storage on your device.
| Name | Type | Purpose | Duration |
|---|---|---|---|
sb-* | Strictly necessary cookie | Authentication cookies set by our sign-in provider (Supabase). They keep you signed in and are refreshed on each visit. | Until you sign out, or until the session expires. |
| Theme preference | Local storage | Remembers whether you chose light, dark or system colours. | Until you clear it. |
| Display preferences | Local storage | Remembers your dashboard layout, sort order, grid size and similar settings on this device. | Until you clear it. |
| Cursor preference | Local storage | Remembers whether you chose to show other people’s cursors during collaboration. | Until you clear it. |
| Guest project | Local storage | Keeps a copy of your project when you use Mathora without an account. | Until you clear it, or sign in and save it to your account. |
3. Strictly necessary storage
Authentication cookies are essential. Without them you cannot stay signed in, and sign-in will not work. Local storage entries are used only to remember your choices and any guest project on this device. None of them is used to track you across other websites.
4. Controlling cookies and local storage
- You can delete cookies and local storage for this site at any time in your browser settings.
- Blocking the authentication cookies will sign you out and prevent you from signing in.
- Clearing local storage removes your display preferences and any guest project stored on this device. It does not delete projects saved to your account.
5. Changes
If we add cookies or similar technologies that are not strictly necessary, we will ask for your consent first and update this page. The “Last updated” date shows when it last changed.
6. Contact
Questions about cookies: support@mathora.app.