Lemon (heylemon.ai) is an AI voice assistant app developed for macOS that transforms spoken instructions into completed tasks or text, rather than merely transcribing them. By pressing the Fn key, users can speak commands within any application (email, documents, browser, chat tools like ChatGPT/Claude/Cursor); Lemon then creates polished prompts, emails, or documents, or executes the task directly. As of 2026, the product is in a free Early-Access/Beta phase with no officially published pricing structure; a paid version has been announced for the future. According to third-party sources, it is developed by "Futureproof Lab"; an official privacy policy had not been published at the time of analysis.

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