Privacy Policy

1. Information We Collect

Personal Information

When you create an account, we collect information such as:

• Email address
• Username/display name
• Authentication information (managed by Supabase)

Usage Information

We automatically collect information about how you use our Service:

• Chess position evaluations and accuracy scores
• Game statistics and performance metrics
• Usage patterns and feature interactions
• Device information and browser type
• IP address and general location information

2. How We Use Your Information

We use your information to:

• Provide and maintain the chess evaluation service
• Track your progress and calculate ratings
• Personalize your experience and recommendations
• Generate leaderboards and statistics
• Communicate with you about the service
• Improve our service and develop new features
• Ensure security and prevent fraud
• Comply with legal obligations

3. Information Sharing

We do not sell your personal information. We may share information in these situations:

• Public Information: Your username and chess statistics may be visible on leaderboards
• Service Providers: We use third-party services (Supabase, Vercel) that may process your data
• Legal Requirements: When required by law or to protect our rights
• Business Transfers: In case of merger, acquisition, or asset sale

4. Data Storage and Security

We implement appropriate technical and organizational measures to protect your information:

• Data is encrypted in transit and at rest
• We use secure authentication provided by Supabase
• Access to personal data is restricted to authorized personnel
• Regular security audits and updates
• Row-level security policies in our database

5. Third-Party Services

We use the following third-party services that may collect information:

• Supabase: Database and authentication services
• Vercel: Hosting and analytics
• Speed Insights: Performance monitoring

These services have their own privacy policies governing the use of your information.

6. Cookies and Tracking

We use cookies and similar technologies to:

• Maintain your login session
• Remember your preferences and settings
• Analyze usage patterns and improve performance
• Provide security features

7. Your Rights and Choices

You have the right to:

• Access and review your personal information
• Update or correct your information
• Delete your account and associated data
• Export your data in a portable format
• Opt out of non-essential communications
• Lodge complaints with data protection authorities

8. Data Retention

We retain your information for as long as your account is active or as needed to provide services. We may retain certain information for longer periods as required by law or for legitimate business purposes. When you delete your account, we will delete or anonymize your personal information within 30 days.

9. Children's Privacy

Our Service is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If we become aware that we have collected personal information from a child under 13, we will take steps to delete such information.

10. International Data Transfers

Your information may be transferred to and processed in countries other than your own. We ensure that such transfers comply with applicable data protection laws and that your information receives adequate protection.

11. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any material changes by posting the new policy on this page and updating the “Last updated” date. Your continued use of the Service after changes become effective constitutes acceptance of the updated policy.

12. Contact Us

If you have any questions about this Privacy Policy or our privacy practices, please contact us through the contact information provided on our website.