Some Android apps keep the screen on while they are running. That's usually okay, but sometimes it's not.
Is there an Android (KitKat compatible) app that will force the screen off even when the current app is trying to keep it on?
I would slightly prefer a non-root solution, but root apps are certainly welcome.
For this QA, I am interested in keeping the app running (in other words, preventing the device from sleeping), but just turning off the display.
For a related QA for allowing the device to sleep, see this QA.