Do you wish your calls and text messages were free regardless of your location in the world or time zone? Voypi allows iPhone users to do this hassle-free and without any sort of contracts or limitations that many free services require. The only catch is that it only works with users who also have the app installed. Besides the iPhone, the app supports hand sets with Android 2.2 or higher. Blackberry support is also coming soon. Whether your friends have an iPhone or not, doesn't really matter with Voypi.