Privacy Policy

1. Information We Collect

• Account Data: Email address, display name, authentication provider (Google, WeChat OpenID, or Email), and your assigned Member ID.
• Study Records: Question attempts, bookmarks, course checkpoints, mock exam timers, and submitted HSK 7–9 translations or essays.
• Billing Metadata: Order numbers, plan type, and receipt links from Lemon Squeezy. Payment card numbers are never stored on our servers.

2. How We Use Your Information

We use your information solely to sync your study progress across devices, generate grading feedback and downloadable PDF score reports, manage credit balances, and resolve refund or course-reset requests via your Member ID.

3. Third-Party Processors

Authentication and database storage are hosted on Supabase, checkout and receipts are processed by Lemon Squeezy, and writing evaluations are processed via server-side API requests without using your personal identity to train public models.

4. Cookies & Session Security

We use strictly necessary HTTP-only session cookies to keep you signed in and to track single-use guest trial limits. We do not use third-party advertising trackers.

5. Data Retention & Deletion

You may update your profile or reset your course progress at any time from My Page. To request full account and submission deletion, email support@newhsklab.com with your Member ID.