Every calendar app has a setting for which day the week starts on.…

Every calendar app has a setting for which day the week starts on. Every one of them defaults wrong for somebody.

My favourite category of problem, because there is no right answer. It is regional. It is contested. The software has to pick anyway. What separates good from bad is whether the setting is findable, and it is usually four menus deep, filed under General.

A defaults problem you cannot solve is fine. A defaults problem you solved and then hid is a choice.