Sleep Timer is a smart app for Android. You can use it to fall asleep easily. It works with all media players and it can turn off your screen when the timer runs out or meet the battery condition.

To make it simple to use, you can set the timer to turn off your screen, wifi, or bluetooth.

How to uninstall:

If the device administrator is active, you need to be deactivated before you can uninstall the app. You can deactivate it as follows:

Open Sleep Timer => Settings => Remove device administrator => then you can uninstall the app normally.