[grayclhn]

Of course, a parent could also install an app like this as part of a long process of discussion and negotiation wherein the child repeatedly blows off commitments to check in, blows off even lenient curfews, and struggles to hold up his or her side of the agreement. Maybe you think that's unlikely, and maybe it is. But assuming that all parents should share your attitude and that they'll all experience your success at childraising (I assume you've been the parent of a teenager?) is absurd.

I have no plans to use the app (my oldest daughter is 5), but there are plenty of good reasons a sane parent might want to. As well as plenty of bad reasons.