Yes, but there is no logon, no radius, no credit card stuff. There is a DHCP request, but thats Coova internal/local. It seems Coova does report the result, but there is no real load on your services. Hence my suggestion to count transactions rather than sessions. Especially since even ‘free’ logon cause a transaction.
And the way I understand it now, even if I did not have a macauth setup (and its really just the AP’s themselves plus proprietors own phone), its counting every time someone gets out and back in range, or every time his/her Android phone goes to sleep and wakes up and re-requests DHCP, etc. This will surely cause the session counter to go up way too fast. And I am arguing this while already having subscribed to the upgrade, so I am giving honest advise, not just trying to get something for free.