Privacy Policy

HSK Mastery Effective Date: May 17, 2026

This Privacy Policy describes how HSK Mastery ("we," "our," "us," or "the app") collects, uses, and protects your information when you use our mobile application available on the Apple App Store.

By using HSK Mastery, you agree to the collection and use of information in accordance with this policy.

1. Information We Collect

When you create an account and use HSK Mastery, we collect the following information:

Account Information

• Email address (used for account creation and sign-in)
• Password (securely hashed; we never see or store your plain-text password)

Learning Progress

• Selected HSK level (1–6)
• Experience points (XP) earned
• Learning streak data
• Words you have studied or marked as learned
• Quiz performance history
• User interface language and translation language preferences

Technical Information

• App version
• Device operating system version (iOS only)