Is There An App That Tracks Phone Screentime Usage

Is there an app that tracks how long you look at the screen?

There are many apps that allow you to block after a certain amount of time, or tell you how long you spent on Facebook and other sites. But is there an app that tells you how long you look at the screen, not how long the screen is turned on or something else?

I would like something that tells me how many minutes or hours I was actually looking at the screen. Should be easy, it already uses face recognition as a password.

I want to track my phone habits. Google s coming or with this soon.

Screenshot_20180814-235735_Chrome

I use Moment – appears to be only iOS.

https://inthemoment.io/.