title: Segues similar to Apple's Clock app
body: <p>I want to segue between my view controllers the same way Apple's Clock app segues between the World Clock, Alarm, Bedtime etc. They just appear instantly, and most important of all, it doesn't instantiate new instances of the different parts (e.g. the Stopwatch and Timer keeps going after segueing). </p>
  
  <p>I'm trying to prevent using a Navigation Controller, because I don't want a back button or anything to appear. I just want buttons that segue you to the other parts of the app without stopping timers etc.</p>
  
  <p>If anyone could point me in the right direction in regards to this, I would appreciate it very much. </p>