Custom 24-hour single-hand watch face for Apple Watch
When it comes to Apple Watch faces, one is limited to customizations as per what Apple allows.

App Store Review Guidelines restrict app developers from creating custom watch faces.


https://developer.apple.com/app-store/review/guidelines/#minimum-functionality



  4.2.4 Apple Watch apps that appear to be a watch face are confusing, because people will expect them to work with device features such as swipes, notifications, and third party complications. Creative ways of expressing time as an app interface is great (say, a tide clock for surfers), but if your app comes too close to resembling a watch face, we will reject it.