Short version
Carbon Footprint Quiz collects no personal data. Your quiz progress, streak, XP and achievements are stored only on your device. We use no third-party analytics or trackers.
What we don't do
- We do not require an account.
- We do not collect personally identifiable information.
- We do not track you across other apps or websites.
- We do not sell or share any data with advertisers.
- We do not use third-party analytics SDKs.
What is stored
All gameplay data (XP, streaks, completed quizzes, language preference) is stored locally on your device in iOS UserDefaults. Reinstalling the app erases this data.
Game Center
If you opt into online multiplayer, your Game Center display name and player ID are shared with the other players in your match only for the duration of the match. We do not store this information on our servers.
Notifications
If you grant permission, Carbon Footprint Quiz sends one local notification per day to remind you about your streak. Notifications are scheduled locally — no push server is used.