Privacy

What we don't collect

We don't ask for your name, email address, phone number, or any personally identifying information. Sign-in is handled by Google or Apple — we receive only an opaque user ID from them, never your profile details.

What we do store

• Your chosen username (not your real name — you pick it)
• Your predictions and scores
• A session cookie to keep you signed in (HTTP-only, never readable by JavaScript)

Analytics

We use PostHog to understand how the site is used. The following events are tracked:

• Page views (which page, not your identity)
• Listing views (which listing, whether you came from the feed or direct link)
• Predictions submitted and edited
• Sign up and log in (provider only — Google or Apple)
• Username changes and account deletion

No event contains your name or email. If you're signed in, events include your anonymous user ID so we can analyse engagement by cohort.

Data retention and deletion

You can delete your account at any time from Settings. Deletion immediately removes your username and sign-in credentials. Your prediction history is retained in anonymised form to preserve leaderboard integrity.

Third parties

We do not sell or share your data. The only third-party services that receive any usage data are:

• PostHog — product analytics (events listed above)
• Sentry — error monitoring. If the site throws an error, Sentry captures technical details (the error, the page you were on, browser info) to help us fix it. No personal data is included in error reports.

Data in both PostHog and Sentry is stored in the EU, as New Zealand wasn't available as a hosting region.