Like the idea of this app but I have not been able to verify its functionality yet. I live on a college campus and there are over 100+ people connected to the wifi in my dorm at anyone time. When I activate this app my laptop and chromebook are both still able to browse the web. Everything seems unaffected. So either the network here is hardened against this apps hacks or the app just can't block that many clients.
But I can't say for a fact that this app does not work though because I can't test it in a controlled environment. It very well could just be my phone. (Running on Droid x2).
I hope a patch is released to address this though, because I really think this app could be useful.