iPad Apps Are Coming to the Mac With Apple’s Project Catalyst

While the Mac and iPad remain distinct products, Apple continues to bridge the gap between its desktop and mobile platforms. In 2014, for example, it introduced Continuity features like Handoff and Universal Clipboard that enable more seamless experiences across the Mac, iPad, and other Apple devices. The next step in this process is Project Catalyst, which makes it much easier for developers to extend iPad apps to the Mac. Starting with macOS Catalina and Xcode 11, developers can create a Mac version of an iPad app using UIKit, an Apple framework that until now was intended solely for iOS apps. Adding macOS support to an iPad app is as easy as opening an Xcode project and clicking the Mac checkbox under General > Deployment Info. While the Mac version of the app should run after the box is checked, this is not always the case, as the Xcode project may contain code that no longer compiles due to frameworks, APIs, or embeddable content that is incompatible with the Mac, according to Apple’s developer documentation:Most iPad apps are great candidates for adaptation, but a few rely on iPad features that don’t exist on a Mac. For example, if your app’s essential…

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