GhostCoder is a desktop application built for one specific job: giving you AI coding help during live technical interviews without interviewers noticing. Rather than a browser extension, it is a native Mac and Windows app so it can integrate deeply with the system, support global hotkeys, and let you interact without a single key press or mouse click.
The workflow is explicitly stealth-oriented. The app reads what is currently on your screen, sends that context to an AI model using your own API key, and returns code suggestions, explanations, or solutions in an an invisible overlay — one that only you can see through your own screen, so it stays out of any screen-share window. It advertises support for OpenAI, Google Gemini, and Anthropic Claude, with more platforms planned.
The commercial model is unusual for this category because it is a one-time purchase rather than a monthly subscription. You buy the license once (advertised at $40, reduced from $100) for unlimited use on a single device, with a year of free updates, and you pay only for your own AI usage through your API keys. A free trial version is available so you can test compatibility with your screen-sharing software before buying, and the company notes it does not offer refunds. The app requires no account, which the developer frames as a privacy benefit.
