In all the previous versions of iOS, you could close the running apps by double-clicking the home button and then long press on the apps and close out the app you need to but not anymore. iOS7 has cooked something delicious, crispy and spicier for you.
Now closing apps on iOS7 is easier and interactive then before. Here is how you can close the apps you want to:
1. Double tap the home button. This will display card-like screenshots of all your running apps.
2. Swipe and scroll the apps sideways to find the app to close, then swipe up the screenshot of the app to close that app.
Below are few more tips on how to close apps on ios7:
Tip #1: To force close an app due to freezing or troubleshooting various issues, launch into multitasking and swipe up on the app’s card-like screenshot — not the icon — but the card itself.
Tip #2: Tapping the home button when viewing cards will always take you back to the app you were in, not the home screen.
Tip #3: To close multiple apps at once, use multiple fingers to swipe up and close up to three apps instantly.
Tip #4: It is better idea to close the apps that you don’t need anymore to free up the iPhone’s memory and increase battery life so that your iPhone doesn’t become lazy.