Screen flashes, spinning things, and promises that your cell will be better and faster and work at peak performance, but all I noticed was a very very slight improvement in seeing any noticable difference from before you downloaded and stared use. Smoke and mirrors wasting time on something that doesn't seem to make much difference anyway.

Don't download this app! It keeps sending me alerts that there's a virus on my phone, and saying I have to download certain other apps along with it, which only ends up being an endless series of updates. And for the entire 12 days that it was on my phone, it kept saying that it was cleaning up junk files. But it turns out, that is all it was doing, saying that it was, but it never did. I uninstalled this and the other apps that I was told I needed or my phone would be locked. They are garbage.

I don't suggest using this app, i deleted a large video file (around 4.5gb) using this app (obviously I don't need this app for that even device system app can do that) but it also deleted some very other important videos (thankfully I had a back-up). I checked the app: when I select a file automatically some other files also selected. Also I only see i can delete only video files and that app does nothing than that.