title: How to detect first time app launch on an iPhone
body: <p>How can I detect the very first time launch of </p>
  
  <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
  {
    // if very first launch than perform actionA
    // else perform actionB
  }
  </code></pre>
  
  <p>method?</p>