WhatsHappening is an Android app developed by WestRiver (서울 구로구 가마산로 27길 24, 1501). Others apps created by WestRiver are: Cat War, Cat War2, Mushroom War, SvsM2.

WhatsHappening first became available on 24 Dec 2011. It is estimated that WhatsHappening has been downloaded between 100000 and 500000 times from the Play Store.