Note: In August 2018, Samsung Gear became Samsung Galaxy Watch. Information referring to Galaxy Watch also applies to earlier Gear devices and apps, unless stated otherwise.
You can use the Galaxy Watch Designer tool to design your Galaxy Watch faces.
To download the Galaxy Watch Designer (GWD) tool, go to https://developer.samsung.com/galaxy-watch/design/watch-designer.
To develop watch faces using the GWD tool, see the Develop Your Galaxy Watch Face tutorial.