Privacy policy
Short version: the game needs very little, you can turn analytics off, and you can delete everything.
Last updated 9 November 2026. Quarturn is a free browser game with no ads and nothing to buy. This page explains what it stores about you.
Accounts
- Guest profile: created on your first move so your progress is kept. It is an anonymous identifier with no name, email or other details.
- Google sign-in (optional): Google shares your name, email address and profile picture link with the game's sign-in provider (Firebase Authentication, run by Google). The game shows your name or the nickname you choose; it does not use your email for anything else.
What the game stores
- Best times per board size, and the boards you solved (time, moves, hints, date).
- Daily leaderboard entries: your nickname (or Google name, or a guest tag), time and moves. These are visible to other players.
- Clubs you create or join: the club name, your nickname and your daily times, visible to the club's members and to anyone holding its invite link.
- Your preferences (appearance, palette, sound, haptics, analytics), so they follow you across devices when signed in.
- If you turn on the streak reminder: a push notification token for that browser and its time zone, so the reminder arrives in your evening.
Analytics and crash reports
With "Usage analytics" on (Settings), the game sends anonymous usage events to Google Analytics (boards opened, solved and shared, with no names or identifiers of yours) and crash reports to Google Cloud Error Reporting (the error, the page and your browser type). Google Signals and ad personalisation are off. Turn the switch off and both stop.
On your device
The game keeps your settings, best times and a sign-in session in your browser's local storage. There are no advertising or tracking cookies.
Where it lives and for how long
- Data is stored in Google Cloud (Firebase) in the United States.
- Guest profiles unused for 30 days are deleted automatically, with their data.
- Everything else is kept until you delete it.
- The database is backed up so it can be restored after an accident. Deleted data disappears from those backups within 14 weeks.
Deleting your data
- Guest: Account menu, then Sign out. The profile and everything linked to it are deleted.
- Google account: Account menu, then Delete account. Your profile, results, leaderboard entries from the last week, club memberships and settings are deleted, and you are signed out.
Contact
Questions or requests: privacy@quarturn.com.