Google+ has released its first version of Official iPhone App, which is now available to download from the App Store.
The Features which are included in the app:
Circles : you can enjoy the benefit of sharing the right thing with write people.
Stream : you can have stream from your circles and also can post in stream.
Hurdle : Special feature for the mobile users, you can have super fast group messaging with friends.
Download From App Store, Click Here [iTunes]
Requirements: Compatible with iPhone 3G, iPhone 3GS, and iPhone 4. Requires iOS 4.0 or later.