Privacy Policy

Chess Coach (Stockfish)

Last updated: August 03, 2025

Overview

Chess Coach (Stockfish) is committed to protecting your privacy. This extension does not collect, transmit, sell, or share personal information. Its only purpose is to analyze chess positions on supported websites using the Stockfish chess engine.

Information Collection

The extension does not collect:

• Personal information
• Names or email addresses
• Passwords
• Browsing history
• Location data
• Financial information
• Device identifiers
• Analytics or usage statistics

How the Extension Works

The extension accesses chessboards only on the following websites:

• https://www.chess.com
• https://lichess.org

This access is used exclusively to detect the current chess position and calculate the best move using the Stockfish engine.

Local Processing

All chess analysis is performed locally on the user's device. No chess positions, analysis results, or personal data are transmitted to external servers.

Local Storage

The extension may store user preferences using the Chrome Storage API. These settings remain on the user's device and are never shared with third parties.

Third-Party Services

Chess Coach (Stockfish) does not use:

• Google Analytics
• Advertising services
• Tracking technologies
• Remote code execution
• Cloud databases

Data Sharing

No user data is shared, sold, rented, or transferred to third parties.

Children's Privacy

The extension does not knowingly collect personal information from children.

Changes to this Privacy Policy

This Privacy Policy may be updated from time to time. Any updates will be published on this page.

Contact

If you have any questions regarding this Privacy Policy, please contact the developer through the Chrome Web Store listing.