Use APKPure App
Get 국립공원 예약정보 - 빈자리, 대기자리 한번에 파악 old version APK for Android
It is an app that shows the remaining seats such as national park campsites and shelters at once.
The troublesome search every time on the national park reservation site
You can check all the campsite vacancy information on the day through the app right away.
Shelter, Minban Village, etc. will be provided later.