VoIP over 3G apps for iPhone are now beginning to show up in the iTunes App Store. After AT&T said they would allow VoIP over 3G, all that remained was for Apple to follow through with an amended SDK, and that happened with iPhone 3.2 SDK for iPad.

So far iCall Free VoIP [Free - iTunes link] and Fring [Free - iTunes link]

We’re not seeing the monster in the space, Skype over 3G yet, but we’re willing to bet that’s incoming.

We’re also happy to see that the iPad is indeed pushing things along for the iPhone as well, and we’re wondering if this means we’ll have VoIP over 3G to go along with those new AT&T iPad data plans they announced yesterday?

If you try out VoIP over 3G on your iPhone let us know how it works for you!

A VoIP company called iCall has developed a program for the iPhone that enables seamless switching of calls from GSM to WiFi. Meaning: iCall will prompt you to switch your phone calls, mid-call, to WiFi so you don’t waste your minutes. Meaning: It’s Free! Though the desktop version of iCall is only available for Windows (Mac Support is on the way) this will probably be one of the more useful VoIP clients for the iPhone.

People who are familiar with T-Mobile’s use of UMA and HotSpot@Home technology will tell you that calls over Wi-Fi are not only free (with the right plan), but often times even better. Using VoIP instead of your minutes would help ease the drain for plenty of users who are always near WiFi and potentially offer international travelers free calls back home.

Currently, iCall is in private beta but plans for a public release very soon. In fact, you won’t even have to jailbreak for this app because the folks over at iCall are confident it’ll be a part of the App Store. 

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