Apps that can measure the true WAN traffic between the router and modem seem to be very difficult to find. From the description I assumed one can pick the correct network interface and that this app would measure internet traffic only, including clients on the LAN. In order to be able to do so, it needs to use the SNMP feature a router may provide.
The interface I was looking for (WAN interface vlan2 or eth2 on my ddr-wrt, Linksys WRT600N) was not listed, just en0, en1,and others. So I assume this app can not connect to SNMP.
In several hours testing it displayed about 7% of the actual internet traffic NetUse Traffic Monitor displayed. I had en0 and en1 checked. So it misses a whole lot of traffic, probably even from the machine it is installed on.
It is nowhere explained what the "Watch internet usage only" checkbox does. TrafficBot Helper is running.
Maybe the dev could explain its limitations?
Here is what I would like to see changed:
1. Have a limited test version on your website to avoid the App Store download and no-refund baloney.
2. State clearly if it can monitor internet traffic by ALL clients connected to a router.
3. Data usage should be selectable by calendar date from-->to.
4. Explain the network interface abbreviations, so users know what to select. (I know that's a difficult one as these seem to be named and assigned differently from router to router)
The only app which seems to do the trick at the moment (at least in basic function) seems to be NetUse Traffic Monitor.