Official Twitter app officially lands on iPhone

Twitter has been stepping up its presence in the mobile world. Until recently, it relied on third-party developers to create Tweeting apps and provide users with a variety of mobile Tweeting options.

Twitter buys out maker of top mobile Tweeting app

Looking back, it was pretty inevitable. Twitter has acquired an independent developer to take full rights of its third-party Twitter client, the one that was widely regarded as the best such app on the iPhone.