Completely closing an iOS application is harder than it looks; usually when you exit an application, it simply moves into the background. To completely close an application, do the following.
- Double-tap the Home button.
- Swipe to the left or right until you see the application (or icon) you want to close.
- On iOS 7, tap the application window and swipe upwards. On iOS 6, press and hold the application until a red minus sign appears on the icon, and tap that.
- Tap the center of the screen to return to the normal view