Terms of Service

Last updated: April 2026

1. Acceptance of Terms

By using Chess Calculator, you agree to these terms. If you disagree, please do not use the service.

2. Service Description

Chess Calculator provides chess analysis tools, AI coaching, puzzles, and games powered by Stockfish 18. The service is provided as-is.

3. Usage

Chess Calculator provides chess analysis, AI coaching, Human Mode, Screenshot Scanner, and a Chrome Extension. How you use these tools is your responsibility. We are not responsible for any actions taken by third-party platforms.

4. Accounts

You are responsible for maintaining the security of your account. One account per person. Sharing accounts is not permitted.

5. Subscriptions & Payments

Pro subscriptions are billed via Cryptomus (cryptocurrency). Subscriptions renew automatically unless cancelled. Desktop app licenses are one-time purchases.

6. Refunds

See our Refund Policy for details on cancellations and refunds.

7. Limitation of Liability

Chess Calculator is provided as-is without warranties. We are not liable for any damages arising from use of the service.