Clean master mobile cleaning app I used before but then I realized that it just an usual app, now a days some companies like redmi any other offer this feature inbuild in their devices, rather this app it also clean our junk file.
And quite background app but this app still running in background and consumes huge amoumt of ram thats why we faces the problems like hang the device, not responding the device, but if u have good ram mobile then this app is helpful to you, the interface is moderate and provide the good features, but I am pesonally not recommend this app to you.