When Apple launched WatchKit, the set of tools allowing developers to make apps for Watch, a number of limitations became apparent. The most obvious is that, for now, you’ll need an iPhone to use many of the features of Apple Watch. All the code used to build apps is stored and executed on the iPhone and the results passed to the Watch. When you interact with Watch, the details are passed back to the iPhone, the relevant code executed, and the results sent to back to Watch. Also, to download apps to Watch, you’ll have to download them on your iPhone and then “send” them over to Watch.
Although not confirmed at the time of writing, a beta version of iOS 8.2 contains a companion app, allowing Watch’s settings to…
