틈틈봇 (잠금화면에서 틈틈이, 자동으로 시험공부)
This is a lock screen study app created so that you can automatically study gas engineer past questions one by one every time you turn on your phone.
Use APKPure App
Get 틈틈봇-가스기사 (잠금화면에서 기출문제 자동학습) old version APK for Android