App Delegate (did finish launching)

self.welcomeViewController = [[APPWelcomeViewController alloc] init];
self.homeViewController = [[APPHomeViewController alloc] initWithNibName:@"APPHomeViewController" bundle:nil];

self.navController = [[UINavigationController alloc] initWithRootViewController:self.welcomeViewController];
self.navController.navigationBarHidden = YES;

self.window.rootViewController = self.navController;

// Push the homeViewController onto the navController
[self.navController pushViewController:self.homeViewController animated:YES];

// Log the user out
[User logOut];

// Then we need to remove the Settings Modal View Conrtoller
[self.presentingViewController dismissModalViewControllerAnimated:YES];

// Then we need to take user back to welcomeViewController
[self.navigationController pushViewController:welcomeViewController animated:YES];

// Take me back to the root navigation view controller (APPWelcomeViewController)
[self.navigationController popToRootViewControllerAnimated:YES];