title: Apple AppStore Legacy App Download Option means no need to maintain code to work for previous iOS version?
body: <p>My app is working perfectly on iOS6. I'm in the work to update my app UI to iOS7. The translucency a flat design is really growing on me. I feel the skeuomorphism design is outdated now.</p>
  
  <p>Do I have to keep checking the device iOS version to maintain the code to work on iOS6 (for eg: set barTintColor on navigation bar will break on iOS6) now that Apple has legacy app download option? Thanks</p>