title: How to apply UIView shifts when scrolling between pages
body: <p>i'm trying to apply a shift effect to subviews of a UIView, but those shifts should'n have the same phase. A good example of that is the welcome screen in SoundClound.</p>
  
  <p><img src="https://i.stack.imgur.com/E9vZc.jpg" alt="enter image description here">
  <img src="https://i.stack.imgur.com/0FQgD.jpg" alt="enter image description here"></p>
  
  <p>As you can see, in the second image i'm scrolling to the second page, and the label slides more than the image (so it looks that the label moves faster than the image). So the subviews lose the alignment when scrolling, but recover it back if we stop the swipe.</p>
  
  <p>Does anyone know how this effect is named? and where can i find some help to implement it?</p>
  
  <p>Thanks a lot!</p>