You’ll be warned by Windows as a notification that the PC will be shut down after the set timer (in our example, 30 minutes). If you want to cancel the shutdown timer, use this command: shutdown -a.

Netflix is testing an in-app sleep timer on Android, but Apple users have the ability to set a sleep timer in any app they want, thanks to an iOS feature.

The GE 24-Hour Indoor Basic Timer ($14.88 for three on Amazon) is a classic mechanical timer: Use the pushpins to set On and Off times for a daily schedule, then plug the unit into a wall and one ...

Scroll and set the amount of time you want to allow yourself on each app. Tap Customize Days if you want to customize your limit's schedule. Tap Add in the upper right corner.