I created and published the mobile application software that shows the desired IETT bus lines by using the web services offered through the Istanbul Metropolitan Municipality Open Data Portal.

Information shown about the selected bus;

📌 Current location (on the map)
📌 Door number
📌 Start and end stops
📌 Close stop
📌 Which way is he going (last stop)
📌 Last location date

Every 60 seconds, the updated data of the buses come, while the whole page is not refreshed. Only the content of the map and the information screen, if any, changes.

This is not official application.