[jeroenhd]

Automatic mute isn't part of it, but I enjoy the "my day" watch face on my Galaxy Watch. It shows a simple analogue clock, the date, and an abstract time line around the edge of the watch representing calendar appointments. You can also tap the little blue lines to get a quick overview of the details without opening the calendar app on the watch.

I'm not sure if this is available for other platforms. If not, there's money to be made, especially if you can add some kind of auto mute feature.