iPhone/iPad Timed Locking Device App

I want an app that is an iPhone & iPad universal build. Build ONLY with Xcode. Each different page has a nib file for easy Interface Builder editing. App allows for a picker style selecting of a countdown clock. Once the countdown timer ends, the device locks itself and cuts the device off. Upon launch of the app, a numeric password will have to be entered. So basically this app will run in the background and auto-lock the device when the timer runs out. The only way to load the app is after entering the correct password. Please make tab styled format with 3 tabs, 1st left blank, 2nd tab has the timer & settings, and 3rd tab is a website site that loads with forward & back buttons.