Never install this app. This is an adware. I've been wasting few days so far trying to uninstall this app from my mobile. This app keeps installing other unwanted apps automatically on my mobile every so often. For example Zumo Frog, Racingmoto, etc.
I am sick of uninstalling them manually all the time. CM gives you fake warnings on battery running low, viruses, etc. It kills your battery slowly.
When tried to uninstall Clean Master, I found that it's almost impossible. I wrote to CM Developers and still waiting for an answer. In my unsuccessful research on internet to find a way to uninstall this app I read much worse things about CM. I have now pretty much stopped browsing any sensitive apps on my mobile including internet banking and FB. As a last resort I have to try factory resetting my mobile.
Those who recommend CM in this forum, can you try once if you can uninstall this app from your mobile. If you do then recommend this to others. Otherwise you may also panic and try to find a way to get out please.