Privacy Policy

Last updated: June 1, 2026

1. Information We Collect

We collect information you provide directly, including your email address when you register, learning progress data, and favorites. When you sign in with Google or Apple, we receive your email address from the respective provider.

2. How We Use Your Information

• To provide and maintain the KnockChinese vocabulary learning service
• To track your learning progress and personalize your experience
• To send email verification messages for account security
• To improve our app and services

3. Data Storage

Your data is stored securely using Supabase (PostgreSQL) with row-level security. Audio files are stored in Supabase Storage.

4. Third-Party Services

We use the following third-party services:

• Supabase (authentication, database, storage)
• Google Sign-In
• Apple Sign-In
• Vercel (hosting)

5. Your Rights

You may request access to, correction of, or deletion of your personal data by contacting us at privacy@knockchinese.com.

6. Contact

For privacy-related inquiries, please contact: privacy@knockchinese.com