https://www.cnbc.com/2018/09/17/how-to-install-ios-12.html

Apple will release its next big iPhone and iPad update Monday. It's called iOS 12 and it has a lot of new features, but also seems like a big refinement over iOS 11, which Apple released last year.

Some of the highlight features include a new option called Screen Time that shows how long you've been using apps on your phone. If you're worried about using one too much, like Facebook, you can set a timer so that it won't open after a predetermined amount of usage in a single day.