Effective date: July 28, 2026
The short version
Mahj Dragon does not collect, store, transmit, or share any personal data. Games are played directly between devices in the same room. There are no Mahj Dragon servers.
What we don't do
- No user accounts. No login. No email, phone, or name collection.
- No analytics, no crash reporters, no advertising SDKs.
- No telemetry — we have no servers to send it to.
- No tracking across apps. No data sale (there is no data).
Local networking
Mahj Dragon uses Apple's MultipeerConnectivity to find and connect to nearby players over your local WiFi network and Bluetooth. This is device-to-device communication in your physical vicinity:
- Your chosen table name is visible to nearby devices running Mahj Dragon while the app is open.
- Game data (tiles drawn, discards, calls) travels directly between the connected devices, encrypted in transit by MultipeerConnectivity.
- Nothing is routed through the internet. Nothing is stored off-device.
iOS will ask your permission for Local Network access — that prompt exists so apps can't scan your network silently. Mahj Dragon only uses it for the game, and by default asks before any nearby host can seat you at their table.
What we store on your device
- Your table name and settings (difficulty, advisor, house rules, sound and comfort options).
- Your local match history — opponents' table names, results, hands, and dates — which powers the Rivals and stats features. This never leaves your device. Deleting the app deletes it.
- A saved solo hand in progress, so a game can resume where it left off.
Game Center
If you sign into Game Center (optional), Apple's Game Center handles leaderboards and achievements under Apple's privacy policy. Mahj Dragon submits only your win count and points total. You can play entirely without Game Center.
Children
Mahj Dragon is rated 4+ and safe for family play. Local play means children play with people physically present — not internet strangers. There is no free-form chat, no gambling, no purchases, no external links in gameplay.