The Offline Line Maps for Istanbul Public Transportation is a mobile application that provides a complete set of offline maps for metro, tram, bus, and rail from the Turkey Istanbul Metro sources. The app does not require an internet connection, making it convenient for users to access the maps anytime and anywhere. Users can zoom in, zoom out, and scroll around the maps with ease, making it quick and easy to navigate.

This app is ideal for both visitors to Istanbul and longtime Turkish residents. It includes a Rail Systems Map, Metro Line Map, Tram Line Map, Bus/Metrobüs Line Map, Ferry Line Map, and Subway, Metro, and Underground maps. With all these maps available in one app, users can easily plan their routes and navigate the city's public transportation system.

The app is developed by indie developers, and users are encouraged to support them by sending feedback or reporting any problems they encounter while using the app. Overall, the Offline Line Maps for Istanbul Public Transportation is a useful tool for anyone looking to explore Istanbul's public transportation system.