What's the best apple application?

Im searching for an apple Application?

• I got my iphone stolen in-front of me a month ago, now its gone, and now i got a new one. i'm looking for an application to secure my iphone, and i'm looking for an application in particular. What it does that on the Lock-screen, you enter your passcode the one you set on your setting for security, and afterward, there's a second passcode you enter and this is from the application passcode at the lock-screen. and what it does if you enter the wrong passcode, it automatic take a picture from the front-view and send right way to your email with the Location. i know theres app that works like this, cuz a friend of a friend, which lost contact, have that application and that how it works, and i've been searching the app forever...

• Answer:

  Check "Undercover" by Orbicule, it may be what you want.