The iOS 7 app switcher has its pros and cons. While app cards do a nice job at previewing each piece of software, quitting out of many apps can be tedious. There are many shortcuts to avoid this available to those with jailbroken iOS devices, and now Clear Background Apps has joined the fray.
Clear Background Apps is a stand-alone tweak with no settings to configure or application to run. Simply install from Cydia and a circular "clean sweep" button will be added to the iOS 7 app switcher. As you might have guessed, tapping this circular button clears away all of the app cards in the app switcher at once.
Simplicity is the main strength of Clear Background Apps. With no dependencies or complex options to sift through, the "clean sweep" button can save frequent app-quitters from repetitive stress. Maybe a future version of iOS will include a way to manually close all apps, but until then Clear Background Apps is one way to accomplish this quickly.
Clear Background Apps is available free on Cydia from the BigBoss repository. Check here for instructions on how to jailbreak iOS 7.x with evasi0n 7. You can also find out how to purchase and install Cydia tweaks with this guide.