Xcode includes everything developers need to create great applications for Mac, iPhone, iPad, Apple TV, and Apple Watch.
Xcode provides developers a unified workflow for user interface design, coding, testing, and debugging. The Xcode IDE combined with the Swift programming language make developing apps easier and more fun than ever before.
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This update is only available for OSX 10.7 (Lion) and does not apply to OSX 10.6 (SnowLeopard)