Last month I mentioned a nice collection of example projects for learning to use WatchKit.
Here’s a nice example of an open source app that uses WatchKit with a great interface called Gulps from FancyPixel.
Gulps is available on the app store, and was created so the user could quickly track and visualize their water consumption. The app uses the previously mentioned DPMeterView to create the custom water tracking meter and also AMWaveTransitions for the wavy transitions.
You can find Gulps on Github here.
You can find Gulps in the App Store here.
A nice open source WatchKit example app.