Are you an iOS user looking to save money on international calls? Well, if you are, there’s an app for that. (Apple really wasn’t kidding when they came up with that slogan.) Vopium Free Call - Cheap International Calls!
free phone calls
iPhone and iPad apps tagged "free phone calls."
KipCall Connects to Your Facebook Contacts By Phone or Email
iPhone apps already access Facebook to sync profile pics and manage contact information. But KipCall offers more - the ability to make free calls to FB friends.
Vopium Offers Limited Phone Experience
Vopium is one of a group of apps that uses a Wi-Fi connection to make and receive phone calls and text messages. It is a good concept—the more one can avoid AT&T's spotty network, the better.
talkFree: No Faves, No Armies, Just Free Cell Phone Calls
talkFree - With so many cellular phone companies and monthly service plans, people often have a difficult time maintaining manageable costs. The best way to manage costs is through the use of the calls your service provider allows you to make free of charge.
Fring Could be the Ultimate Killer App.
Fring, the integrated IM client, launched today for the iPhone. Before getting into Fring specifics, pay attention to what happens at 46seconds on the above video. What is mentioned (an I have confirmed) is that if you hold down the sleep (top) button of Fring for a second and then release, the phone will power off, but you still will receive alert messages when pinged by a Fring IM client (such as AIM or Skype).