GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Task Killer - Task Killer is an application which automatically forces other applications to stop which are running in the background, making you enhance your smartphone performance and battery life.
TinyWall - Lightweight and non-intrusive firewall
Advanced Task Manager - End applications, speed up phone, and save battery.
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.
AMC Cleaner - AMC Cleaner is the ultimate clean master app from IObit Mobile Security.