apps.apple.com/us/app/watchsm...
Watchsmith lets you personalize your Apple Watch like never before.
It starts with a wide collection of highly customizable complications, which range in function from date, to weather, to astronomy. Each can be adjusted precisely to best fit your desired function and appearance.
This set of complications can then be dynamically scheduled to appear on your watch face following rules you define. For example, a particular complication slot could show the weather first thing in the morning, then your calendar during your work day, then switch to your Activity ring progress as you wrap up your day. This lets you take full advantage of each slot on your watch face without the need to constantly switch back and forth between faces.
The Apple Watch app itself also includes a wide collection of tools and functions, such as a weather app, a workout app, a timezone converter, games and a calendar. Watchsmith provides one tap access to what you need, right when you need it.