This is what I've used to "stop" running apps that you might not need
Select 'APPS' from the home screen.
Then from the APPS tab, select SETTINGS
From the DEVICE section, select APPS
Swipe left or right to the RUNNING tab and that will show you the APPS that are currently running.
Tap one that you would like to STOP running. (BE CAREFUL
some like Google's Play Services apps may need to run!)
From the SERVICES section, select Stop.
From the 'Stop system service?' prompt, select OK.
That should STOP the app from running until you either restart your phone or start the app again. Hope this helps.
Note: I have VZW and the following is disabled on my Moto X : Google Play Books, Google Play Newsstand, NFL Mobile, Verizon Navigator, Caller Name ID. That's all and I get constant 2 days of battery life on 4.4.2 KitKat