Terms & limitations.

This free experience is intended for adults exploring simplified Chinese. Use it for curiosity and informal friendly competition, not school placement, hiring, certification or medical decisions.

The reading check covers a limited, fixed sample. Its recommendations are uncalibrated and do not represent HSK, CEFR, speaking or listening ability. Puzzle performance is separate from reading ability.

Play fairly. Do not automate excessive requests, submit misleading identities, scrape private invitations or post offensive nicknames. Anonymous first-attempt controls are best-effort, not identity verification.

You control when to export a card, join a link-visible room or enter a public leaderboard. Outside recipients may copy shared summaries. See Privacy for retention and deletion. Privacy

Operator contact: shazhuang1996@gmail.com. Hosting region: Ashburn, Virginia, United States (Fly.io iad). Service may be temporarily unavailable for maintenance.