If the issue is having to give the phone to the kid, no solution that relies on the phone will solve that.
Am I misunderstanding the problem?
Do you want a censored version of the menu?
Censored and large font. No descriptions. No prices. Any paired drink or side choice obvious.
Yea, I was just thinking to turn in more into a game. Or some kind or Tinder for selecting what you want as a kid. The healthier the more points or something hehe ;)