For iOS, Screenzen is an app that does this: https://apps.apple.com/us/app/screenzen-screen-time-control/id1541027222 https://apps.apple.com/us/app/screenzen-sc

For iOS, Screenzen is an app that does this: https://apps.apple.com/us/app/screenzen-screen-time-control/id1541027222 https://apps.apple.com/us/app/screenzen-screen-time-control/...