This app helped me to track down a rogue app that was secretly monitoring my usage and throwing up many types of pop up ads when I was using the phone. That app would turn itself on for less than a second and go to sleep  leaving behind pop up ads which seemed to not have any connections to any running processes. OS Monitor allowed me to monitor the 'status' of running and sleeping apps on my phone and I was able to spot the dodgy behaviour of this app that Antivirus and Malware cleaners could not find. There are other uses for this app but right now  this single feature will be part of my Android tool kit.
February 17 2017