When you are using your mobile data you want to count your precious bytes. And in my case I don’t want to install any 3-d party apps for such a simple task.

Luckily on MacOS you have nettop command

nettop -n -m route -k rx_dupe -k rx_ooo -k re-tx -k rtt_avg -k conn_att -k conn_est

…simple like that. It will provide you with enough statistics without any additional noise

First line will show your usage

First line will show your usage

You may read more about nettop here