How to Close Apps
To close an app, just simply press the Home button to get back to the home screen. If the app is in a folder, you’ll have to press the Home button twice in order to get back to the home screen, since you have to travel back out through the folder before you can get to the home screen.
However, this doesn’t close out of the app all the way. Pressing the Home button to exit out of an app doesn’t completely close it out; it still stays running in the background, that way it’s still up and running if you ever want to go back in. To completely close an app, double-click on the Home button. This will bring up iOS 7′s new multitasking tray.
You can scroll through the multitasking tray horizontally and look at all the apps that are currently open. Each app includes a preview card and the app’s icon below it. To close out of an app, simply swipe the preview card of an app upward to completely close it.
