I'm trying to install this app on my iPhone 4 (iOS 5.0.1, 3 Network) but I keep getting the error "Error connecting to server! An error has occured. Please try again later".
I'm a bit disapointed tbh (although I haven't actually tried it in anger yet). They showed it on The Gadget Show this week and said you can use it reduce data use for streaming media; turns out you can't use it for that at all!