Last updated: 21 September 2026
KNOCK11 is a mobile game that turns football knowledge into live duels. For questions about this policy: A contact address will be listed here shortly.
A random ID and a device session key for your guest account (only a hash of the key is stored). Your username, country, football level and the leagues and clubs you follow. Your birth date: never shown on your profile, used to match questions to the football of your era. Your game data: matches, answers and their times, scores, MMR, Football IQ, achievements, friendships and head-to-head records. If you allow notifications, your device’s Apple push token. In-app usage events (such as opening the app, signing up, starting a match) to improve the game. The note you add when you report wrong data.
To run the game, match you with rivals of your level, compute rankings and statistics, tune questions to you, send competitive notifications and keep the football data accurate.
We do not sell your data, show ads or use third-party tracking or advertising tools. Your username, country, rank, statistics and Football DNA are visible to other players and in links you share. Our servers run on Hetzner in Germany (EU). Notifications are delivered through Apple Push Notification service.
We keep your data while your account exists. Ask for your account and data to be deleted at A contact address will be listed here shortly.; we delete within 30 days. You can make this device forget your identity at once in Settings → “Reset identity on this device”.
KNOCK11 is not for children under 13; signing up requires an age of at least 13.
Player and club information is derived from Wikidata (CC0).
If we update this policy we change the date on this page.