Cookie Policy.

Last updated: 9 October 2026

Percept uses a small set of cookies and browser storage. Under UK PECR, anything non-essential only runs after you accept it in the consent banner — declining leaves analytics completely off. Sentry (error monitoring) does not set cookies.

sb-*-auth-token (Supabase)

Essential

Keeps you signed in. Set by Supabase Auth as secure, HttpOnly cookies; cleared on logout.

Duration: Session / refresh cycle

percept-consent

Essential

Remembers your cookie choice so we don't ask on every visit. Also stored in localStorage.

Duration: 12 months

ph_* (PostHog)

Analytics — consent required

Anonymous usage analytics (page views, feature usage) to improve Percept. PostHog is only initialized after you choose “Accept analytics”; declining means it never runs.

Duration: Up to 12 months

Changing your choice

Click Cookie settings in the footer of any page to reopen the consent banner and change or withdraw your choice. Choosing “Essential only” withdraws analytics consent and instructs PostHog to stop capturing immediately — it does not delete cookies or local-storage entries already on your device (you can clear those in your browser settings). Most browsers also let you block cookies globally; essential storage is required for sign-in to work.