title: How use iOS 7 font?
body: <p>We want use iOS 7 font in iOS 5+ app.</p>
  
  <p>We try this:</p>
  
  <pre><code>UIFont *font = [UIFont fontWithName:@"Helvetica Neue Ultra Light" size:50];
  </code></pre>
  
  <p>Or </p>
  
  <pre><code>UIFont *font = [UIFont fontWithName:@"Helvetica-Neue-Ultra-Light" size:50];
  </code></pre>
  
  <p>But font is <strong>(null)</strong>.</p>
  
  <p>So, how use iOS 7 font?</p>