Explore Shenzhen is a highly recommended iPhone app for travelers, praised by CNN and Lonely Planet. It serves as Shenzhen's best subway map, providing up-to-date information on all metro lines. One of its standout features is the ability to work offline, ensuring that users can navigate the city's subway system even without an internet connection. The app also offers a route planner, GPS functionality, and street maps, making it easy for travelers to find their way around. Both English and Chinese languages are supported, catering to a wide range of users.

The Explore Shenzhen app is available for free download, with optional VIP features for users who wish to upgrade. The free version of the app is ad-supported, while upgrading to VIP offers additional features such as the removal of ads, extra functionalities, and the ability to support future development. With its accurate metro map, regular updates, and user-friendly design, Explore Shenzhen is a valuable tool for navigating the city's subway system.