Technologies like Skype have been around for some time, letting us make calls from our computers. The iDevice revolution put VoIP calling in our pockets, but services like Skype are actually rather limited. Yes, you can Skype or fring on the 3G network now, but only to other members of the same service. Skype can call Skype and fring can call fring, or you can pay to make calls to numbers outside of their service. Not a bad deal if you're calling another country, but paying to use your iPhone data package you already paid for to call your buddy seems like a raw deal to us.
Not surprisingly, a couple apps have come up with an interesting alternate form of calling.
