Snail 2.0.7 macOS

Snail main window displays real-time apps bandwidth and total traffic
Use controls next to each app to tune apps bandwidth
Mobile data cap? Save data using Snail! Automatically enable bandwidth throttle when connected to your iPhone local hotspot and automatically disable it when connected to home wifi or ethernet network
Working from home? reduce your videocalls bandwidth usage to save data and to let more users share the same Internet connection
Snail 2 requires macOS 12 Monterey or later.
Home Page-

https://www.murusfirewall.com/snail/