I got a comment on my old Warrior Nuns mod for Oblivion - a really simple two-quest thing I created around an outfit.

it complained that my instructions were vague, and the mod needed a map to show exactly where it all happened. The readme directs you to "a lake in the Colovian Highlands" - there's only one lake to choose from. It also mentions Infested Mine, which just happens to be at the end of a lake in the Colovian Highlands. I'm surprised there was no complaint that I'd hidden the entrance (Beth did that).

How much hand-holding do they need?

Tell them they can buy the map in the Crown Store.

Hilarious! As Einstein said:

“Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.”

So there is no app for that? ... Tsk tsk