Nail on the head.
When bus passes, school meals, etc are on apps, the ship has long since sailed.
Add into that, schools who've embraced homework apps, encouraging phone camera use in science experiments, even setting classwork based on apps and online research/online quizzes in lessons themselves! I've even heard of a local school who now do their register and lesson attendance monitoring via apps on pupil's phones!
The genie is out of the bottle. Like with banking apps, car park apps, etc. The future is a World controlled and managed by Apps. We need to wake up and smell the coffee to how the World is today and how it will look in 5 years time!
As you rightly say, it's up to parents to actually parent, control what their kids are doing, set parental controls on their devices, talk to them, monitor them, nurture them, etc. Parents have to take responsibility!