Generated by ChatGPT Unfortunately, the provided text does not give any information on what Mercure AI actually does. The text is only related to the App Store and various products and services offered by Apple. Therefore, it is not possible to provide an objective, insightful, and precise description of Mercure AI based on this text. It is recommended to conduct further research on Mercure AI to understand the AI tool's functionality and purpose before drafting a description for an AI directory.