Here's a pretty useful little iOS tweak, especially if you've got kids who like to go tapping icons on your iPhone, with little regard for your saved game progress or super-important work document you've been editing.
Just as AppLocker's name might suggest, this $0.99 tweak adds a new pane to Settings.app, in which a password lock can be added to all your iOS applications, meaning they won't launch unless you know the special word.
That's all fine and dandy, but AppLocker goes one step further than that...