simple countdown timer with start stop function - repost

I require someone to write a very simple iphone app that can compile in the new iOS 7 sdk. The application needs to have 3 count down timers. You should be able to set 3 timers call them time 1 , 2 and 3. Time should be selected using either a Pick View or a custom UILabel. 2 times should be set using the following format HH:MM:SS and the final timer should be a simple count that counts and integer down from what ever value set between 99 - 0. There should be a start button that will start the count down and that button should turn into a stop button when pressed. There should also be a reset button to reset the timer. Max Payout is 50 dollars depending on delivery time and quality.