Purrbook

Based on the text provided, it is not possible to determine what Purrbook: Three Little Pigs is. The page title and description suggest that it is an app available on the App Store. However, the text provided only includes links to various pages on Apple's website, such as their online store and product pages for Mac, iPad, iPhone, Apple Watch, and accessories. It also includes links to specific pages for education, business, veterans and military, government, Apple trade-in, financing, and other special stores.Without any additional information or context, it is not clear what features or functionalities Purrbook: Three Little Pigs offers. It is possible that it is a book or game app based on the classic story "The Three Little Pigs." However, this is purely speculative and cannot be confirmed based on the text provided. In summary, the description of Purrbook: Three Little Pigs is not provided in the text provided.