Android app keeps Screen on, how to let it go *OFF* against app settings? The app is one of those applications that keeps the screen on and doesn't permit it to turn off. It's killing the battery and I shouldn't have to simply manually turn the screen off constantly. Every other app simply lets the screen turn off once I stop interacting with it like a good app should.

Hence my question: Is there any setting/app/widget/button/magic wand of any kind that will let me block this application from keeping the screen on. There has to be some kind of permission I can revoke to stop it from doing this.

The phone is rooted.
In short, no, you cannot, write a review on the said app's entry on the Play store, and email the developer in question to get that to be made optional via settings within the app itself. 

If the developer refuses to budge or dismiss the feedback, best to look for an alternative out there.