Money Trap!!
It only does work when there is internet connection. If you are travelling oveseas and dont use roaming due to stellar price , this app is useless. Only works when you have a wifi. No different than viber, whatsapp, facebook messenger etc. But for this one you pay money with an expectation that it is not dependent on internet... Stay away, dont spend your money for such since there are many similar free application.
ZAZA King about
Talk360: International calls, v1.0