How Do I Quit Apps In iOS 9?
Yes, you can quit apps you are not using in iOS 9. From any screen, double-tap the Home button at the bottom of your device. The iOS app switcher will appear on screen. Swipe left or right to find the app you would like to quit. Then swipe up on an app to quit that specific app. When you're done, press the Home button once or tap on an app in the app switcher to exit that screen.