Little yes little no
I signed up for the app while at Gatwick airport. It worked great and super fast. I thought this would be perfect for the rest of my trip. When I arrived in Barcelona it worked in my hotel but there was wifi included anyway. Everywhere else I tried it it couldnt connect and I could only get the map of places to connect when I was connected! Seems like there is something missing here. I would recommend that you could download a list of active spots that you could save. This is not available from the mobile app that I can see. Not ideal but better than what is currently available.
Latetripper about
Boingo Wi-Finder, v5.1.0040