Hi,
Yes Cuety uses broadcast in a similar way as vManager. It will broadcast discovery to 255.255.255.255 and to the broadcast address based on your IP/subnet, so that could be something like 192.168.1.255. It uses port 16945 as well.
We are planning to add a way of sending a broadcast to a specific IP address in the future, but it might take a while before we get around to doing that in the Cuety app I'm afraid.
Greetings,
Bootsy