title: Swift custom animations progress
body: <p>I'm looking for some 3rd party or code snippets for implementation of the custom animations like this one: <a href="https://drive.google.com/open?id=1nwmkBgHYUFGR_rrn9aM6S1CrSLpOb6Jb" rel="nofollow noreferrer">https://drive.google.com/open?id=1nwmkBgHYUFGR_rrn9aM6S1CrSLpOb6Jb</a> (take a look at the top bar of progress animations)</p>
  
  <p>I am not strong in animations in iOS and this one looks to me like a complex task with all these bounces etc.</p>
  
  <p>Could you help? Thanks in advance!</p>