Last updated 10 July 2026
Quadrio has no analytics, no advertising and no trackers. The game works without an account; if you sign in, it stores your email address and your solved squares so they follow you between devices.
Nothing about you is sent anywhere. Your solved squares and chosen theme are saved in your own browser, on your own device.
Signing in exists so the squares you solve on one device appear on another. Quadrio stores your email address and your solved squares — the grids, the times taken, and the dates — and nothing further about you.
Supabase provides sign-in and the database (EU servers). Google is involved only if you choose "Continue with Google", and shares your email address with Quadrio — see Google's privacy policy. Resend delivers sign-in emails. None of this data is sold or shared for advertising.
Quadrio sets no advertising or analytics cookies. Signing in stores a session token in your browser so you stay signed in, and signing out removes it.
You can delete any square, or clear your whole history, from inside the game — this removes it from your device and your account. To delete your account entirely, or to access, correct, or export your data, email [email protected].
Accounts aren't intended for children under 13.