Privacy Policy

Last updated: April 2026

1. Information We Collect

We collect information you provide when creating an account (email, name) and usage data (pages visited, features used). We do not sell your personal data.

2. How We Use Your Information

We use your information to provide the chess calculator service, process payments via Cryptomus, improve the product, and send account-related communications.

3. Cookies

We use essential cookies for authentication and preferences (theme selection). We use analytics to understand how the site is used.

4. Data Security

We use industry-standard security measures including encrypted connections (HTTPS), secure password hashing (bcrypt), and JWT-based authentication.

5. Third-Party Services

We use Cryptomus for payment processing, Google OAuth for authentication, and OpenAI for AI coaching features. Each service has its own privacy policy.

6. Your Rights

You can request deletion of your account and all associated data at any time from your dashboard settings or by contacting us.

7. Contact

For privacy-related questions, contact us at privacy@chesscalculator.com.