Cookie policy
Last updated: November 6, 2026
Summary
Formulo only uses technical cookies, needed so you can sign in to your account. We do not use advertising or tracking cookies, which is why we do not ask for consent with a banner.
Technical cookies
Clerk, the sign-in service, stores cookies such as __session and __client_uat to keep your session open and protect it. They last until you sign out or the session expires. A second cookie, formulo-lang, remembers the language you chose and lasts one year.
Local storage
We store in your browser, under keys that start with "formulo.", your progress, your drafts, the argument separator you prefer, your language choice and your mock exam results. If you have an account, progress syncs with it; if not, it never leaves your browser.
Measurement
Usage and error measurement (PostHog) works without cookies and without storing identifiers in your browser: what it needs is kept in memory while the page is open.
Payment
The payment page belongs to Dodo Payments, sits on its own domain and may use its own technical and anti-fraud cookies. See the Dodo Payments cookie policy.