Up until recently iPhone users wanting to cut their phone bills by using Skype have been forced to use third-party solutions, such as fring or IM+ for Skype. But with the official Skype for iPhone app now available free, such third-party offerings are likely to become less popular. Skype for iPhone does pretty much what you think. It lets Skype users make free calls to fellow Skype users, using a Wi-Fi network, as well as allowing the use of Skype accounts to make reduced-price calls to traditional landline phones.
Read the full article: Skype answers the call for iPhonistas