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Privacy Notice

Summary version. Last updated 25 May 2026. Full notice goes live at launch.

Pre-launch summary. The full Privacy Notice is in final legal review (see DPIA P0-13). The points below describe what we will collect and why; the launch-day version will be the binding document.

Who we are

Markhunt is operated from the United Kingdom. The data controller is the Markhunt operating entity; for any privacy query, write to privacy@markhunt.app.

What we collect

CategoryWhyRetention
Email + Google account ID (or anonymous guest ID)Sign-in, prize delivery, account recoveryUntil you delete your account
Location at the moment you check in to a landmarkTo confirm the visit; we do not track you continuouslyVisit record kept; raw coordinate truncated to 50 m
Booster purchases (via Stripe)Receipts, refunds, VAT, chargebacks7 years (UK tax law)
Support ticketsTo answer you2 years
Anonymised analytics (Plausible)To improve the productNo personal identifiers, no cookies

What we do not do

We do not track your location in the background. We do not sell your data. We do not use advertising trackers. We do not run third-party cookies on this site. We do not share your data with brokers.

Your rights

Under UK GDPR you can ask us for a copy of your data, ask us to correct it, or ask us to delete it. We will respond within 30 days. Email privacy@markhunt.app with the subject line "DSAR".

Who else sees your data

We use Google (sign-in), Stripe (payments), Neon (database, EU region), Fly.io (hosting, London region), MapTiler (maps), and Plausible (anonymous analytics). The full sub-processor list with locations and DPAs will be in the launch-day notice.

Complaints

If you think we have mishandled your data you can complain to the UK Information Commissioner's Office at ico.org.uk. We would rather hear from you first so we can fix it.

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