Fast Tap Camera priced at £0.59 ($.99) is a very simple app that allows you to take a photo by tapping anywhere on the iPhone's screen.
To use this app, just launch it, tap anywhere to take a photo, let the app automatically save to the iPhone's camera roll, and that's it your ready to take the next shot.
This is a simple and effective app that does exactly what it says on the tin, and makes photo taking on the iPhone so much easier. So much so that I have now made it the default photo taking app on my iPhone, and the good news is I have 5 promo codes to give away.
UPDATE: No sooner had I published this review, then the app received an update. The update fixes some known bugs (not that I found any), and adds the option to take three photo's before being saved to the camera roll. This is not a multi-shot option, it just allows you to take up to three separate photo's and then save them.