David Smith writes about changes to WatchKit Apple launched yesterday with the fifth beta of iOS 8.2:

In all my design work for my WatchKit apps the question that I keep asking is: How will this make my app more convenient to use? If I don’t have a good answer for that then I’m likely heading down the wrong path.

Watch apps shouldn’t try and be full blown apps, replicating the full functionality of their big-brother iPhone apps. Instead they should be sleek, svelte companions that take advantage of their immediate availability to their user. This leads me to the problem I’m so glad Apple has addressed. The tap distance required for the user to perform any action.

This, I hope, is how developers of the iPhone apps I use every day are thinking about Apple Watch. Making Watch apps that emphasize quick interactions in a natural and direct way instead of cramming iPhone apps into a small display.