I’ve mentioned a number of resources for the Apple Watch, most recently an example of an Apple Watch app for controlling a Tesla car.
Here’s a Swift based code example from Kenny Tang providing a an Apple Watch Pomodoro technique inspired time management app with a number of nice features called Cherry.
Cherry has a nice clean interface design, features Core Data based persistence, and Glances for showing activity and allowing you to jump straight into the watch app.
You can find Cherry on Github here.
You can also find KTPomodoro – an Objective-C based version of Cherry with a few less features on Github here.
A nice example of a useful Apple Watch app.