Cookies and storage

Last updated: September 25, 2026

Codea uses no advertising or tracking cookies.

What we store in your browser

• Session: Firebase's authentication service keeps your session (in browser storage) so you don't have to sign in every time.
• Preferences and speed: we store your language, light or dark mode, your last opened week and a copy of your profile so the app loads instantly.
• No-account mode: if you enter without an account, your progress is also tied to that browser.

How to delete it

You can sign out from your profile or clear the site's data in your browser settings. If you entered without an account, save your progress with Google first so you don't lose it.