Butterfly Watch Face is a watch face application for Wear OS. However, it can also be used as a clock widget on your mobile phone. It comes with a range of features, including customizable design colors, day and month display, watch and mobile battery display, and weather display (requires phone app).

The watch face settings can be accessed through the Wear OS app on your mobile phone. You can choose between small, big, translucent, and opaque cards, and switch betweenhour mode. You can also choose to display leading zero on hours and seconds dots.

The app offers free and premium settings. With the premium version, you can choose your own title in place of "BUTTERFLY," switch between eco/simple b&w/full ambient mode, and define a secondary timezone for digital display. You can also save your preset with all its options and import/export presets.

Overall, Butterfly Watch Face is a feature-rich app that allows users to customize their watch face according to their preferences.