Legal
Privacy Policy
Last updated: 27 July 2026
QIZU holds the quiz sets you build and how you are doing with them. This page describes exactly what is stored, where, and how to remove it.
Data we collect
When you sign in with Google we receive your email address, display name and profile picture — used solely to identify your account. The app stores the quiz sets and cards you create and your practice statistics (cards answered, time practiced, streaks). We do not collect any other personal data.
Purpose of data collection
Your data is used solely to sync your quiz library across your devices and to show you your own learning statistics within the app.
Data storage and security
We store your data securely on Google's Firebase platform (Cloud Firestore, hosted in Zürich, Switzerland), encrypted in transit. Crash reports — device model, operating system, app version and crash traces, never your quiz content — are processed by Firebase Crashlytics to keep the app reliable, and can be turned off at any time under Settings → Privacy. Firebase App Check verifies that requests come from the genuine app.
Cookies and tracking
QIZU does not use cookies, advertising identifiers, analytics, or any tracking technologies.
Subscriptions
The optional QIZU+ subscription is processed entirely by Google Play. We never see or store your payment details; we only learn whether a subscription is active.
Data sharing
We do not share your personal data with any third parties other than Google as part of the Firebase and Google Play services named above.
Data retention
Your data is retained for as long as your account exists. You may delete your account and all data at any time.
User groups
All user groups are treated equally. We do not apply different rules or collect different data based on age or other characteristics.
Your rights
You can delete your account and all data directly in the app (Settings → Delete account), or follow our Data Deletion Policy. Individual quiz sets can be exported as CSV inside the app; you may also request a copy of your data via the contact below.
Children
QIZU is not directed at children under 13 and we do not knowingly collect data from them.
Changes to this policy
If we change what QIZU collects, we will update this page and change the date at the top.
Contact
For questions or requests, email hi@QIZU.net.