The antivirus report shows that this application is safe. The app has been originally created by Sonky soft and it relates to the Maps & Navigation category. Google Play shows that Korea Bus is rated 4 by its users.
The developer released a new version of this application on Oct 17, 2020 and over 100K users downloaded and installed the tool. There are ads in the app. Take the opportunity to download the .apk setup package of Korea Bus 3.5 for free and have a look at users' reviews on Droid Informer. The installer takes up 3 MB on disk and it runs on Android devices 5.0 and above.