TweetDeck, the popular cross-platform Twitter client, has been reborn for the iPhone. While it is quite common for app to undergo makeovers and updates, TweetDeck has been completely re-built from the ground up. This is a serious redesign rather than a simple update, and there is a great deal to look forward to in the new app.

One of the most interesting and innovative new features of TweetDeck 2 is the new navigational gestures that are supported. Even on the iPhone’s limited screen, the swiping motion used to view tweets, view tweeter details and discover new people to follow works incredibly well.

TweetDeck is best known for its multi-column interface that made it easy to switch between different aspects of your timeline or even different accounts. Columns are also available in the new iPhone version of the app, and any feed or search you can access through the app can be transformed into its own column by simply clicking the + button that is always available at the top of the screen.

A new pinching gesture has been added that enables uses to enter column editing mode. In this mode it is possible to change the order in which columns are displayed, delete columns that are no longer needed or even add other Twitter or Facebook feeds to make it easier to access more information in one place.

With support for both Facebook and Twitter, TweetDeck has the two most important social networking bases covered, and the fact that all of the essentials such as re-tweeting, likig and disliking, commenting and more are all supported means that many people could use the app as their sole means of interacting with social networks.

Almost to emphasise the fact that this is a completely new version of the apps, TweetDeck 2 is not available as an update. New and existing users alike will have to visit the App Store and download the app from scratch – existing users are advised to first remove any old version of TweetDeck that they may have installed already.

At the moment, TweetDeck 2.0 is only available for iPhone and iPod, but an iPad version is in the pipeline. You can  find out more and download a copy of this free Twitter client by paying a visit to the TweetDeck review page.