Use APKPure App
Get Flexi_work, the overtime app old version APK for Android
쉬운 응용 프로그램은 초과 근무를 제어 할 수 있습니다.
You can control your overtime, when you do it and when you get it back because there is less work.
This app is very easy and effective, You can also email and whatssapp your overtime balance.