The Subway Korea app has been named the 2015 Google Play App of the Year. It offers the fastest and most accurate subway station timetable among all public transit and subway map apps. The app provides various services, including subway navigation and maps for main cities in Korea such as Seoul, Busan, Taejeon, Kwangjoo, and Taegu. It also features a destination notification and transfer station notification system to ensure users don't miss their stops.

The app uses the official city railway system data, providing the most up-to-date information on subway schedules. It supports different schedules for rush hour, weekdays, Saturdays, and Sundays, as well as public holidays. The app also offers an easy and diverse search function, allowing users to search for subway stations by name and providing suggestions for the shortest time routes. It even includes information on facilities available at each station, such as restrooms and elevators.

For expert users, the app offers advanced functions such as a social algorithm where users can contribute to improving information on transfer stations and delays during rush hour. It also allows for personal customization of the user interface, with options to customize subway maps and transfer information according to area, language, and unit. The app provides comprehensive search results, including information on subway routes, stations, and exits, as well as directions to the destination using Google Maps.

Please note that this app includes in-app purchases, and separate fees may apply for certain features. The app's terms of service and privacy policy should be reviewed before use.