StackSocial offers downloads of Udemy's The Ultimate Xcode For iOS Apps Course for Mac for $79. That's $418 off and the best price we could find for such a course. Designed for beginners, this online course teaches you how to build an app, create a unique user experience, and how to get your idea to the app store quickly. It features over seven hours of content, 155 online lectures, and more. Deal ends October 24.