Privacy
What information we collect and how it is used. We do not collect an email address from anyone who only joins a party.
Information we collect
| Information | When collected | Who |
|---|---|---|
| Email address | Registration and login | Registered members only |
| Nickname | Joining and registration | Everyone (guests: on-device only) |
| Match records (game, ranking, rating) | After a match | Everyone |
| Device and browser type | On access | Everyone |
| IP address | On access | Everyone |
| Payment information | Premium sign-up | Premium members only (we do not store card numbers) |
How we use it
We use it to run matches, show your results, prevent cheating and abuse, investigate outages, and improve the Service. We do not use it for personalized advertising.
What we share with third parties
Payment is handled by Stripe. We give rights holders aggregate data — play counts, player counts, time played, win rates, and similar — with names and personal information removed. Match records (such as move history) are shared, also with names removed, only for players who have opted in. We do not share your information elsewhere except where required by law.
Retention
Match records are kept for about 13 months and access logs for about 90 days, as a guideline. Aggregate statistics are kept.
Table chat
If someone reports a message, we keep the table’s chat for 30 days from the report so that we can review it. If there is no report, the chat is deleted when the party ends.
If you close your account
We delete information that identifies you personally, and keep match records in anonymized form. Past-season leaderboards remain, anonymized.
Cookies
Used to keep you logged in. You can decline cookies in your browser settings (you will not be able to stay logged in).
Access, correction, and deletion
Contact us at contact@qdan.co.jp. We will act on your request after confirming your identity.
Business operator
Qdan, Inc. (address and representative are listed on the Specified Commercial Transactions Act disclosure)
2026-09-13 / Qdan, Inc. / contact@qdan.co.jp
Last updated 2026-09-13 · Run by Qdan, Inc.