Years ago I picked up this roll up tarp I use for my windshield. Fits pretty much all cars and trucks and covers the whole thing with some elastic tie downs that loop over the rear view mirrors.
Thing has been a life savor on cold mornings and even on days that it comes snow and ice.
Just put it on when you get home and when you go out to get in it to leave of a morning there is zero scraping. You can still start the car to warm it a bit but all the work that is required is rolling it up to put it in the backseat.
Granted if it snows or sleets it can make it more difficult as you have to move some of this off the cover first.
My company did a similar 3rd party app on their phones for truck drivers, to cut down on driving distractions and within days they had all figured ways around the software and were back to watching videos while driving.
If people (or kids) want a way around they will find it. There have been too many examples that can be found already of them getting around similar software.
Best go with the ‘non smart’ phone to begin with the simply eliminate the issue altogether.