Open-Source: http://github.com/dpnishant/appmon
Powered by: http://www.frida.re
AppMon Sniffer is a part of the AppMon project, it let's you monitor system API calls on native iOS apps on both jailbroken and non-jailbroken devices. Tested on macOS
This video represents my personal opinions and is, in no way, validated/endorsed by any of my past or present employers.