Ccleaner is the great .the best cleaner availabe in the market today.very easy to use.removes temperory files very easily and all in once no time waste by deleting temperory files by going into the file manager.clear cookies.junk files.makes the phone smooth and fast and aslo free some space to install more apps.free our ram memory tahat are previously using by junk files.also delete only that files that are of no use to make phone faster. also have various editions of Ccleaner the best part is that this is the free software and works without ads .i found this app very useful in daily usse for my phone.makes my phone faster.very good app we get .great work.