title: Why does my app display differently on the iPad than simulator?
body: <p>I'm fairly new to developing. My app is graphic heavy with some animation using timers. I am testing on a 4th gen iPad retina. In simulator (Xcode 5) the timers I have going for animations run slower than on the iPad, and some other graphic features (like things fading in and out) don't work the same in simulator as the iPad build. Should I trust the iPad's build and not the simulator? Should I also test on different iPad models to check if the graphic animations run correctly on different models or are they likely to run the same? </p>
  
  <p>I focus on UI art &amp; have experience with making graphics rather than dealing with the Xcode environment itself, so any info about how programmed animation views display on different devices or different environments would be really helpful. </p>