For my first Sensor Watch face I went quite simple and made a periodic table app. It allows you to look up the symbol, atomic mass, and group for any atomic number you input. Although not all of the symbols can be displayed, I still think the face was a nice way to learn to program for the Movement Firmware.
GitHub Repo
For this watch face, I decided to make an app for converting between common kitchen units. It allows for masses,
temperatures, and volumes to be converted, as well as supporting both the US and Imperial systems of
volume.
I also think this app has a lot more general utility than my periodic table app, but I'll definitely
keep both loaded on my watch at all times!