This app is not doing well.This app is only for virus in the mobile phone the app is very dangerous for mobile.It hangs the mobile phone and the mobile phone become slow and getting hangs.but some people says that the clean master useful it is not useful it is a virus.for all the mobile phone please beleive me the app is very wrost and bad.my mobile phone become very slow after I download this app and in my friends mobile phone my friends are also download this app but the app is damage and slow the mobile phone.