Running on Ipad or Iphone?

IpadIphoneAppDelegate.m

- (BOOL)application:(UIApplication *)application
    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
    [self.window addSubview:self.splitVC.view];
  } else {
    [self.window addSubview:self.navigationController.view];
  }

  [self.window makeKeyAndVisible];
  return YES;
}