However, the most simple, and perhaps the most effective app is a live wallpaper app. Unlock Clock, as the name suggests, is a live wallpaper that’ll show you the number of times you’ve unlocked your phone on a particular day. The idea is solid: to make you feel guilty about the times when you unlocked the phone to do nothing, or just check Instagram when you were bored. You can download Unlock Clock from here, and read more about Google’s new digital wellbeing experiment here.