Skype is certainly one of the best uses of video conferencing and VOIP calls for the iPhone though we have attractive alternativesVOIP Using Skype, iPhone Viber as Viber for iPhone. This application lets you manage your contacts directly from your iPhone, Facetime style, without needing to open sessions with your account. It also has a good user interface, much like the iPhone handles calls.

To configure this application will need your phone number as well as with Skype and can call at no cost to your contacts who have this same application on the iPhone, iPod or iPad.

Viber this for free on the App Store, only spend money when making calls to phone numbers, but as we say if you have installed Viber friends can make free calls as in the case of Skype.

They say they are working on a version for Android and Blackberry, so probably in the future, users can also call these devices. It integrates with your contacts, you just have to activate it with a code that you send them by SMS. No need to create users and passwords, and appreciated. To understand, is how WhatsApp that SMS is for free, but with this program you can talk. You hear a lot better than a phone call, as happens with Skype, even if you listen a little late, but not to make the call uncomfortable.

The news that this application exists has spread like wildfire. So much so, that Viber already No. 1 in the free downloads. We found a few drawbacks, but many have used to make free calls.