What is watchkit-for-ios?

WatchKit for iOS lets you take an app built for Apple Watch and run it on an iPhone, without rewriting the whole thing. It was a finalist at HackGT 2016, a weekend hackathon in Atlanta. Normally, Apple Watch apps are built using a special set of tools called WatchKit, which only runs on the watch itself. This project rebuilds enough of that toolkit to work on the iPhone instead. In practical terms, a developer swaps one line of code, changing import WatchKit to import WatchKit_iOS, and drops in a setup snippet to display the watch interface on an iPhone screen. The project handles the translation in between. The creator proved the concept with an actual app called Emoji Sudoku, which was originally a watch app. Using this framework, the watch version ran on iPhone with almost no changes, and that same approach now powers the App Store version of Emoji Sudoku. This is useful for developers who built a watch app and want to reach iPhone users without maintaining two separate codebases. Because it was built in roughly 36 hours for a hackathon, the reimplementation is partial. It covers a handful of core interface elements, controllers, groups, labels, and buttons, along with support for storyboards, colors, fonts, and force-touch menus. More complex WatchKit features aren't included, so it works best for simpler apps rather than full-featured watch applications.