It says that it cleans out junk files and things but then it will literally message you every few minutes that something "needs" to be cleaned or optimized. It also is constantly trying to get you to download another app that "boosts" their app it's obnoxious. I would not recommend this app!!.

It kept trying to make me install apps I didn't want and tried tricking me into installing one particular app by disguising it and I had that app previously and AT&T was able to invade my phone which was not theirs and caused my phone to become infected and put apps hidden on the phone causing all kinds of problems eventually totally disabling my phone.

It's on top of everything, any time it detect's junk mail.... It has an annoying habit of letting me know in the middle of online browsing.