Related question: When I open apps I sometimes drag them to a different location on the desktop, usually so it's not overlapping some other open app or doc. Problem is, if I reopen the app at a later date it goes back to the original position and I end up moving it again. Is there a way for Windows to have the app (in this case, Calculator) open in the same new position each time? I've searched but found nothing; maybe I'm not using the right terms.
It depends on the app. For example, when coding apps, you can set a property that determines the starting position of the app, whether it is always centered, randomly chosen, in a fixed position, or can be user-changed.
Some apps have ini files or registry keys in which they keep their starting positions. You could find them and edit them to suit your needs.