I am mad. Since a few days I randomly get advertisments on my Android phone, I thought I just accidently clicked on banners in the browser or so. Now I found a new "app" call "Hiboard" or "Super Tools" when I swipe to the left of the left most screen. It shows some data like battery info, CPU/RAM info and network traffic and offers antivirus and malware scans or most likely to download antivirus and malware snake oil they get a nice commission for. And it shows advertisments. There a slider button for disabling this app, but I did not tested this. This app is not listed in the app list, so I started disabling/deinstalling apps on my phone to see who installed this crap. And it turns out, it's a new function of Apex Launcher. Something I never needed or wanted, something that shows me ads.. So I just deinstalled Apex Launcher. 
Google does not find much when you search for "Hiboard", and most android hits are related to Huawei phones, but I own a Cat S41. 
 
In the end, if you are annoyed of this "Hiboard" "super tools", just deinstall Apex Launcher, the use value of this crap went down with the recent updates of Apex Launcher.