And in particular, there's a whole section that reads "With Truple, you can virtually "peek" over your child's shoulder & course-correct as needed."

So right there it's admitting that the intended use is to spy on someone else (in this case, "your kids"). I'm with you here. I just don't believe OP on this one.

Apple thinks this is a spying app, and they don't want it on their platform.