MetroMapShangHai-Subway Lines is a free iPhone app developed to provide users with the most convenient Shanghai Metro information. With the latest and accurate subway data, users can easily query routes and receive optimal transfer plans by selecting starting and ending points. This app is an essential tool for travelers using the Shanghai Metro, offering a concise and user-friendly experience.

After becoming a member, users unlock all functions without restrictions, receive future updates for free, and enjoy an ad-free experience. Subscription details are clearly explained, with payment charged to the iTunes account upon purchase. Users have the option to cancel subscriptions easily via their App Store account settings, ensuring flexibility and control over their membership.