It's a great application !! Works fine.. We needed such an application for iPhone and iPod ..
@ George - it does work on unlocked iPhones my friend has a unlocked 3G S and it works just fine..
@ Oliver - I agree it still needs a few basic features am sure the dev team will add those in the upcoming versions..
This app is not bad. But it is not practical. I think not having a contact list makes it absurd to even have the app. I think Whatsapp is far better because it has a contact list. It costs US$0.99. One dollar is too cheap for an application that does this much.