Okay I installed and run it myself as a test. Quick and easy install during which it took me to the ncap download page (required) Found no issues and shows quite a bit of info. Worth a try.
It seems to be a lot like the freeware version of GlassWire. I sometimes use the network monitor of SpyShelter Firewall to see where apps connect to, but you can't figure out if those connections are malicious or not, so what's the point.