Q. How do I close my running aps on iOS7?

Here is how to close open apps in iOS 7:

1. You still double click the home button, but instead of scrolling through them on the bottom of the screen, open apps appear on the large part of the home screen.
2. You can see the various apps by swiping the screen to the left or right.
3. When the app you want to close is in the center of the screen, swipe up towards the top of the screen to close it.

Simple when you know the trick. :)