Seoul Busan subway app is not for Koreans, it is for users who are not familiar with Korean language.

Features:
•English interface
•All stations appear with names and numbers
•Autocomplete station search function
•Also search using only station numbers
•Search for The shortest distance route with fare information
•Search for the Nearest station of current location
•Seoul and Busan subway Maps with English names and station numbers
•Share search results via Facebook, Twitter and email
•Bookmark feature without login