Jinhak Co. is an Android developer that has been active since 2012. The current app portfolio contains 40 apps. In the Google rankings, Jinhak Co.'s apps appear in the top 100 in more than 5 countries. Some important apps are 포켓한국사 설민석 lite
, 울학교_오늘 뭐하지?
, and 그림어원 수능 VOCA
. All of them have been installed more than 100 thousand times.