After that I revisited MMGuardian. Things there are almost as bad. They haven’t implemented password security on their MDM profile; the vendor claims Apple doesn’t support the functions they rely on with a locked profile.
I also learned that MMGuardian’s primary app control, which is to hide all non-default apps, also deletes their folder and icon arrangements. So when they are restored they are no longer in their original locations.
MMGuardian can’t report on device usage, probably because it doesn’t have a VPN option.
Lastly, while MMGuardian can hide Safari, that’s a binary setting. It can’t schedule Safari to be active or disabled the way it can schedule other apps.
In my 2016 review Qustodio and MMGuardian were the only candidates to meet basic requirements. As of 2018 there are no longer any useable iOS parental control applications.
So now we wait to see if Jana Partners and the California State Teachers Retirement System can push Tim Cook to add remote MDM to iCloud. I doubt they’ll succeed. Next it’s up to the EU.
Update: Apple introduced a Family page and branded it as doing something in the general direction of supporting vulnerable users. That’s not a positive sign.