Tasker is extremely powerful, and I use it for all sorts of things on my phone. One thing that it really does well is sleep timers, i.e. turning off things after a certain period of time. Some apps have such a feature built in, but even those aren’t as advanced as what Tasker can do if you really sit down and learn the ropes. The video goes through some basic ways of using Tasker this way, covering both a media player timer, a children’s play time timer and a work time management timer.