I have an Android that I frequently run apps on for hours at a time and I've never had this problem before. The game taps 25%+ (25 yesterday, 27 today) of my battery. This is a constant drain, and is in effect even when KHUX is closed. I force stopped it from the battery menu, with no results. If there are in-game settings to diminish this, I can't find them.
At this point the only way my phone can restore its battery is by turning it off while it's plugged in. Which would be fine on its own, but this tremendous power hog also leaves me only a few hours of battery life when the phone isn't charging.