Bangkok Rail Map Lite is a travel and navigation application available on iPhone, designed to provide users with a clear and concise map of the city's rail and subway system. Key features include a beautifully designed rail map, a route planner that quickly identifies the fastest routes with transfer stations, and an index for rapid access to any station. The app also offers an overview of train lines, showing the sequence of stations and available transit options.

Additional functionalities include day and night maps for optimal visibility, GPS support to locate nearby stations, and high-resolution graphics that enhance the visual experience on retina displays. Users can rotate and zoom the map for better navigation, while station lookup capabilities allow for easy searching by name. The app integrates with Apple Maps for seamless route planning, making it a comprehensive tool for travelers in Bangkok.