With this app, you can track how much time you spend on your smartphone or tablet. This is the first step in achieving (or maintaining) a balance.
Moment (iOS/Android): With this app, you can track your screen time. The app constantly runs in the background and tracks the amount of time your screen is switched on. If you feel a need to limit your screen time, you can add an alarm notifying you when you have exceeded your chosen time limit. You can use the app free of charge, but you can also add on extra options against a charge.