I think there must be more than one app by now that have used circles. The one I know is HABU music:
https://appsto.re/us/QL-nG.i
Thanks for the link.
I will admit, nothing to do with the watch, but I have wanted a 3D desktop.
When I mean 3D desktop, I mean, as well as being able to move icons and windows in X and Y, left/right, up/down, we could also, perhaps holding down the mouse wheel move them in Z also. In and out of the screen.
Been wanting this for years, and still waiting for it to be done by the big boys.
Window in the way, no need to minimise or make the window smaller, just push it into the distance, and pull it back when you need it again