I have used this app for a while and noticed that when freeing up storage space, it tells me it can free up 1.4 gigs of space but when I do this....and check to see Device Maintenance/Storage.....the App didn't free up anything..... However it does clean up everything else it lists. So far, this app isn't worth using till the issue is fixed. (+ 3-22-2021) Ads DISRUPT the scanning process, resetting the scan..... FIX this problem. (+ 3-7-2022) KeepClean windows constantly pop up. Very Irritating.