Popular VoIP and messaging service Viber announced today the release of version 4.1 of its mobile app for Android and iPhone. The update includes the full global launch of Viber Out, a new feature that allows users to make low-cost calls to any mobile or landline phone number.
The service uses credit that can be purchased through in-app purchases, or via credit card, and the minutes can be used on Android, iOS or your desktop. It's actually a lot like how Skype works, except it looks like Viber's rates are much lower and it won't charge connection fees...