Part I. Innovating Beyond Apple's Design Standards, While Maintaining Apple's Logic for Consistency, Clarity, and Usability

With over 100,000 apps in the App Store, how have Facebook and Tweetie managed to rise above the rabble? Used by millions of iPhone owners and accessed just as often as many of Apple's native apps, both these social network clients wield incredible influence, not only over their users, but also over the way UI standards come to be accepted by the iPhone masses in general. These are no normal apps. They are apps that help make the platform.

Tweetie and Facebook are incredibly deep and beautifully-engineered pieces of software. The two are made for very different use--Tweetie is borne of singular purpose, while Facebook is evolving ...

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