Do you want to close an iPhone app with the touch of a finger? Well, A new jailbreak tweak has been released in Cydia using which you can close an app available on your iPhone with the touch of a finger. The name of this tweak is Magic Fingers. It brings gestures to an iPhone. Simply install this tweak on your jailbroken iPhone then you can configure the set amount of fingers, when touched on the screen simultaneously, to close an app.
Magic Fingers tweak is available in Cydia under ModMyi repository for free of cost. You should note that you will need to have a jailbroken iPhone to install this app. If you don’t have a jailbroken iPhone then simply follow the step by step instructions posted here to jailbreak your iPhone on iOS 4.2.1 with Redsn0w.