One place where the app does truly innovate, however, is in the way that it handles invites and child privacy. Only the user who created the child’s account can give permission for other people to see or interact with the timeline. This one-way system gives the parent(s) total control over who can see their content at any one time – for example, you could invite a teacher to follow one child’s moments, but not another. There’s a lot of flexibility here, which is incredibly useful for those who care about their data and privacy.
— A great Notabli review from The Next Web.