Awful
It originally took me quite a while to figure out how to configure this for Gizmo5 (I did a *lot* of Googling and experimenting). The connection is unreliable and many times the calls simply dont go through (even fring works more reliably once it has logged in). Sadly, the end user documentation is atrociously poor and the user interface is decidedly ugly. About the only positive is the superior audio quality over fring, but thats about it. Based on its overall reliability, there is no way I can recommend this dreadful app. Spend your money on something else.
seany @ iname about
WeePhone SIP