Gave my 11 year old an apple watch, not so that I can track him, but just so that he can call me when he needs me ( there are times when he's at practice and am running late to pick him up or sometimes he just plain loses track of time because of his ADHD ).

And, he can set timers and alarms to keep track of his schedule.

My kids are pretty free-range, riding their bikes to/fro from school and hanging out at their friend's places.

I did not want a phone because it's way too distracting