Microsoft today announced that a limited number of iPhone owners in the United States and China can now sign up to test-drive the first public beta of its personal digital assistant, called Cortana. “Over the coming months, we’ll continue to deliver frequent updates to the app to expand the features and functionality,” notes the Windows maker.
While Cortana offers the most complete experience on Windows devices due to its tight integration with Microsoft's operating system and Apple-imposed restrictions related to iOS development, Cortana for iOS does take the intelligence of its Windows counterpart and brings that experience to the user's iPhone.