title: Reducing iOS App file size
body: <p>I have made a very simple iPhone app with Xcode 6.1 and swift. I am really new to ios developing and ran into an app which in the end is 134 mb! of course this is not acceptable. </p>
  
  <p>I have background images for all screen sizes which add up to 20 mb. and thats it! I am storing those images in xcassets, as thats the preferred way I guess.</p>
  
  <p>the app shouldnt have more than 25 mbs, I think.</p>
  
  <p>I figured out that I had some references doubled in my project. I removed these and still my .app file is 89 mbs!</p>
  
  <p>What am I doing wrong? I read several threads on this, but nothing really helped!</p>
  
  <p>What I did until now:</p>
  
  <pre><code>- reduce the size of all pngs
  - disable the compress PNG option, as it seems to make the PNGs bigger (lol)
  - configured the build settings to run the fastest and smallest build
  - Strip Debug Symbols During Copy build setting to Yes (COPY_PHASE_STRIP = YES)
  </code></pre>
  
  <p>edit1: Apparenty Xcode does something weird with my pngs. Some of those pictures, that are 2 mb originally, are more than 10mb in the .app-file. What does xcode do there ?</p>