N5 Labs ("we", "us") is an independent software developer. Chess Coach is a browser extension that acts as a real-time chess tutor on chess.com learning surfaces — the analysis board, game review, puzzles, and games against the computer.
None. Chess Coach does not collect, store, or transmit any personal or user data. It has no backend server and makes no network requests of its own.
To teach, the extension reads the current chess position (the arrangement of pieces) from the chess.com page you are viewing. This happens entirely inside your browser, in memory, so the extension can draw arrows on the board and show or speak short explanations. This board information is never stored and never sent anywhere; it is used momentarily to generate coaching and then discarded as the position changes.
Chess Coach requests host access to chess.com only (https://www.chess.com/*). This is used solely to read the on-screen board and to draw its coaching overlay on chess.com pages. The extension runs on no other website and requests no other permissions.
Optional spoken coaching uses your browser's built-in speech synthesis (the Web Speech API). No audio is recorded, stored, or transmitted by the extension.
Chess Coach is a learning tool. It operates only on analysis, game review, puzzle, and vs-computer pages, and is designed to stay inactive during live games against other people.
There is no sign-in, no analytics, no advertising identifiers, and no cookies set by the extension.
Chess Coach is a general learning utility. It is not directed at children under 13 and does not knowingly collect personal information from anyone.
N5 Labs does not sell personal information. The extension does not collect any to begin with.
You can remove Chess Coach at any time from chrome://extensions. It leaves no data behind. For questions, email support@n5labs.com.
We may update this policy as the extension evolves. Material changes will be reflected here with a new effective date.