I installed this app on a Samsung Galaxy S3. After installation I went through and set EVERYTHING to lockdown mode. Nothing should have been going or coming on WiFi or Mobile. Surprisingly  traffic from my phone increased dramatically. This firwall was unable to help whatsoever in fact  it seems to have compromised my phone. I know this because I have a WatchGuard Firewall in my network between the modem and internal network so I can see every single packet of traffic on my network. Most people probably do not have such a device as they are used in Commercial businesses usually. Very disappointed. To install this I uninstalled LostNet No root firewall. As old as it is  the LostNet Firewall seems to have done a MUCH better job even though the IP tables lists are apparently dated. I would be VERY interested to hear what the developers have to say in response to this.
April 29 2017