To turn off apps on iOS7, double tap the home button, navigate the multitasking view and swipe your finger up on the icon of the app you want to turn off. The icon flies to the top of the screen and turns off the app.Continue Reading
Double tap the home button located at the bottom of your phone.
Swipe left and right to find the icon of the app that you want to close.
Tap and hold the app you want to close and then swipe up with your finger to close it.