Guan Dan, Btw is a free multiplayer card game available on the web at guandan.dev and as an iOS app. This policy covers both.
Nothing is collected or stored about you. When you play, the display name you type is sent to the game server so other players at your table can see it. It is held in memory only for the duration of your game session and is never written to a database, linked to your identity, or shared with anyone.
There are no accounts, no sign ups, and no passwords.
The app contains no analytics, no advertising, and no third party SDKs. We do not track you.
The app connects to the game server at guandan.dev over an encrypted connection to play games. Standard, transient connection information (such as your IP address) is used only to deliver the game and is not logged for any other purpose.
The game is suitable for all ages and collects no personal information from anyone, including children.
Questions? Email tony@tonybtw.com.
Last updated: July 2026