Cookie Policy

Cookies are small text files placed on your device when you visit a website. They allow the site to remember information about your visit — like whether you are logged in, or which filters you last applied. We also use similar technologies: localStorage for persisting UI state, and session storage for temporary data. This policy covers all of these.

We use four categories of cookies: Strictly necessary cookies These are required for the platform to work. They include: — Session authentication tokens (to keep you logged in) — CSRF protection tokens — Payment flow state You cannot opt out of these. Functional cookies These remember your preferences: — Filter and sort settings in the Discover and Markets sections — Dark/light mode preference (if added in future) — Notification preferences You can disable these without breaking core functionality. Analytics cookies We use anonymised analytics (Vercel Analytics) to understand how the platform is used — which pages are visited, where users drop off, and what features are most used. No personally identifiable data is collected for analytics. You can opt out via your browser settings or a browser extension. Marketing cookies We currently do not run retargeting or third-party advertising. We do not use third-party marketing cookies.

The only third-party cookies on our platform are set by our payment processor (Stripe) as part of the checkout flow. These are strictly necessary for payment processing and are governed by Stripe's own privacy policy. We do not embed social media widgets, third-party video players, or advertising networks.

You can control cookies through your browser settings: — Chrome: Settings > Privacy and security > Cookies and other site data — Firefox: Settings > Privacy & Security > Cookies and Site Data — Safari: Preferences > Privacy — Edge: Settings > Cookies and site permissions Blocking strictly necessary cookies will prevent the platform from working correctly. Blocking analytics cookies will not affect your experience. You can also delete all cookies stored by ProbablyBig by clearing your browser's site data for probablybig.co.uk.

We will update this Cookie Policy if we add new cookies or change how existing ones work. Changes will be reflected in the effective date above. We will notify you by email if changes are material.