If I support on-watch screen settings editing, does it take away from memory available for the watchface app, either on the watch models that support it, or on the watch models that do not?
If I support on-watch screen settings editing, does it take away from memory available for the watchface app, either on the watch models that support it, or on the watch models that do not?
The code for on device settings is part of your app's prj file, so yes, it will take memory.
I see. Can this be tested in the simulator or not?
Use view Memory in the sim, with and without your code for on device settings. You'll see a difference.