Design of an iOS app that can train apnea

I'm looking for someone to make the design of an iOS app that can 1. count the time of the users holding their breath. Should let user choose time to count down and number of cycles to be repeated, have a graph of human emphasizing on the lung part 2. Have a stopwatch to count the time of the users holding their breath and display every breadth holding time [login to view URL] draw the person's record into a line graph based on every breadth holding time (y-axis) and each time holding the breadth (x-axis) The name of the app is "Apnea Training"