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HSK Lord
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Privacy Policy

Last updated: February 24, 2026

Introduction

HSK Lord ("we", "us", or "our") operates the hsklord.com website. This Privacy Policy explains how we collect, use, and protect your personal information when you use our service.

Information We Collect

We collect the following types of information:

  • Account information: Email address and password when you register.
  • Google OAuth data: If you sign in with Google, we receive your name, email address, and profile picture from your Google account.
  • Study progress: Your flashcard reviews, scores, streaks, and learning statistics.
  • Usage analytics: Pages visited, features used, and general interaction patterns to improve our service.

Cookies & Local Storage

We use cookies for authentication and session management. We also use browser localStorage to cache study data for offline access and faster performance. You can clear this data through your browser settings at any time.

Third-Party Services

We use the following third-party services:

  • PostHog: Product analytics to understand how users interact with our app.
  • Google Analytics: Website traffic analysis and usage statistics.
  • Stripe: Secure payment processing for subscriptions. We do not store your payment card details.
  • Resend: Transactional emails such as password resets and account notifications.
  • Google OAuth: Optional sign-in via your Google account.

How We Use Your Information

  • To provide and maintain the HSK Lord service.
  • To track your study progress and power the spaced repetition algorithm.
  • To process subscription payments.
  • To send transactional emails (password resets, account updates).
  • To improve our product based on aggregated usage data.

Data Retention

We retain your account and study data for as long as your account is active. If you request account deletion, we will remove your personal data within 30 days, except where we are required by law to retain it.

Your Rights

You have the right to:

  • Access the personal data we hold about you.
  • Request correction of inaccurate data.
  • Request deletion of your account and associated data.
  • Export your study data.

To exercise any of these rights, please contact us at support@hsklord.com or visit our contact page.

Children's Privacy

HSK Lord is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe a child under 13 has provided us with personal data, please contact us and we will delete it promptly.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of significant changes by posting a notice on our website. Your continued use of the service after changes constitutes acceptance of the updated policy.

Contact Us

If you have questions about this Privacy Policy, please contact us at support@hsklord.com or through our contact page.

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