title: Tool for comparing Xcode project files
body: <p>I've been given the Xcode project files for version 1 and 2 of a iOS app. Version 1 is working, version 2 is buggy with more features. The original programmer is no longer available. No versioning system was used.</p>
  
  <p>Is there a tool to compare the different projects - so I can see what code was added between version 1 &amp; 2?</p>