How to Shoot Videos & Photos in iPhone without Launching any App: Number of Apps available to capture Photos and videos in iPhone. But every app needs open in order to use the app. Bit confusing? Yes, every app works when it opens but QuickShoot Pro is different. It captures photos every time you double-tap the icon of the Camera app. You can also control basic camera settings right from your SpringBoard.
To capture a photo without launching the camera, simply tap the app icon or camera shortcut on the lock screen twice. If you want to choose to assign a gesture to the QuickShoot Pro Options Window. It works always with Camera icon unless you disable the tweak from its settings menu. It works only with Jailbroken devices. You can grab all these features only for $0.99 and app available in Bigboss repo of Cydia store.