Privacy Policy

Last updated: April 2026

1. Introduction

ChessOpeners ("we", "our", or "us") respects your privacy and is committed to protecting your personal data. This privacy policy explains how we collect, use, and share your personal information when you visit our website or use our services.

2. Information We Collect

We may collect and process the following data about you:

  • Account Information: When you register, we collect your email address, username, and authentication data via Supabase.
  • Usage Data: We track your progress on the platform, including completed chess variations, puzzle attempts, XP earned, and current streaks. This is necessary to provide the gamified experience.
  • Payment Information: If you subscribe to Premium, your payment details are processed directly by our secure payment provider (LemonSqueezy). We do not store or process your credit card information on our servers.
  • Analytics Data: We use Vercel Analytics to collect anonymous, aggregated data about how visitors use our site to help us improve performance and user experience.

3. How We Use Your Information

We use your information to:

  • Provide, maintain, and personalize the ChessOpeners platform.
  • Track your learning progress and maintain leaderboards.
  • Process transactions and manage your Premium subscription.
  • Communicate with you regarding updates, security alerts, and support messages.

4. Data Sharing and Disclosure

We do not sell your personal data to third parties. We may share your data only in the following circumstances:

  • Service Providers: With trusted third-party services that help us operate our platform (e.g., Supabase for database and authentication, LemonSqueezy for billing, Vercel for hosting).
  • Legal Requirements: If required to do so by law or in response to valid requests by public authorities.

5. Data Security

The security of your data is important to us. We rely on industry-leading infrastructure (Supabase) to secure your account data. However, remember that no method of transmission over the Internet, or method of electronic storage, is 100% secure.

6. Your Rights

Depending on your location, you may have rights regarding your personal data, including the right to access, correct, or delete your account and associated data. You can manage your account directly within the Platform or contact us to request data deletion.

7. Changes to This Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date.