CalGPT is an AI tool designed to function as a personal assistant with a specific focus on managing and organizing your calendar appointments. It aims to streamline your scheduling process and allow you to efficiently control your time. By utilizing a text-based interface, users can instruct CalGPT to schedule meetings, move events around, and it can even respond to queries about your upcoming schedule. Utilizing a user's calendar history, CalGPT finds suitable timings for everyone involved. Once a meeting time is found and approved, CalGPT takes care of adding the meeting to your calendar and sending invites to all participants, complete with all necessary details. As of the available information, CalGPT supports Google Calendar only in terms of calendar platforms. For any subscription-related queries and further information, CalGPT provides an email for communication.