Recently, I talked to a customer who suggested either a read-only mode, or a read-only version of the Ting App that can be installed by parents or guardians on a child/ward device so they can see their usage, but not make changes.
Personally, I think it's a great idea as a toggleable feature, though not so much as a different app because people would get confused between the "full" version and the "Nanny" version.
As a feature built in to the existing app, I can see the merit because I'm a parent too, and I understand. So, if we could do this and have the toggle password protected, I think it would be a selling feature. Naturally, if there's multiple MDNs on an account, the "Nanny" version would need to filter, and that's likely to be a lot of work, but I think it would be worth it.