Very poor.
I could only get it to work for about 30 seconds. After that, it times out and shuts itself down. I liased with the support person to try and resolve it, nothing worked. Tried turning off firewall, uninstalling, re-installing, nothing worked. Bear in mind I am a web developer and not a novice user.
I have asked for a refund, but they are ignoring me. I would stay away if I were you, I have invested a couple of hours trying to get it to work and now it appears they will not refund.