Most answers are on this page. For everything else: we read everything and usually reply within 2 days.
The radius is 75 metres around the marked point — in dense streets GPS can drift. Step into the open, wait a few seconds, and pull the card down to refresh. Still stuck? The card keeps its study status; nothing is lost.
No. If your home answer was right, arriving inside the radius stamps the card instantly. If you hadn't answered yet, you get the question right there.
With the six-digit game code — no account, no download barriers beyond the app itself. Nickname in, team assigned, play.
Yes — create a free account (e-mail only) and your passport syncs. Without an account, the passport lives on the device.
Purchases run through the App Store; refunds follow Apple's standard process. City packs you've bought stay yours — forever, on every device with your account.
Settings → Account → Delete, or one line to us. Deletion is immediate and complete — see Privacy for what little there is to delete.
[email protected] — we read everything and usually reply within 2 days.