PCAP Remote is a non-root network sniffer app that allows you to debug and analyze Android traffic on your desktop PC using the app's built-in SSH server. This app is especially useful for developers who work with complex/custom network protocols. The traffic is captured using an Android OS feature called VpnService, and it supports capturing traffic as .pcap files. The app has MITM functionality, which allows you to decrypt traffic in Wireshark. The best part is that it does not require root access.

PCAP Remote is designed to be used with Wireshark, which is the most popular tool for network troubleshooting, analysis, and software and communications protocol development. However, other similar tools can also be used since captured packets are saved in the commonly used pcapng format.