This app collects and utilizes timetables and historical information of Busan Transportation Corporation, rail portals and public data portals. Main function introduction 1. Search train arrival information based on timetable for each subway station up to 5 lines up and down 2. Inquiry about train location information based on timetable of subway line 1~4 3. Basic information by station, timetable, map location information, and convenience facility information inquiry 4. Favorite function p