This is not a app, it is one of the largeat bank of virus. When I install this app suddenly my mobile was switch off after some time my mobile was switch on automatically but my other mobile app was not worked some was open and some was not. Even I can not unistall 9apps, whenever I am tried to uninstall this app 9apps open itself and again my mobile was switch off and again after some time open itself. After 2 days finally I am able to uninstalled this app and when I am uninstalled this app my mobile work
properly and fast. I was think that my mobile have 2gb ram thats why I face this problem but when I discuss about 9apps with my friends they also face problem like me. So in my opinion 9apps is a worst application I have ever seen.