ChatPC is an AI-powered productivity assistant designed specifically for macOS, which enables users to automate various tasks on their Mac using conversational language. It integrates with core apps such as Finder, Calendar, Mail, Notes, and Safari, allowing users to efficiently organize documents, find information, manage emails and calendars, and enhance their writing. People might want to use ChatPC to streamline their workflow, save time on routine tasks, and maintain their privacy, as the tool promises end-to-end encryption and a commitment not to use customer data to train AI models.