If you want to view another demo app on an iPhone, you must first close the app, and end the PREVIEW YOUR APP process. Simply double click the bottom button (the one that takes you back to your home screen). You will see all of the processes that are currently running on your phone. Hold down the PREVIEW YOUR APP icon until it begins to shake. It will now have a – (minus sign) on it. Press the – (minus sign) to end the process. Now just click the bottom button on your phone again (the one that takes you back to the home screen). Now reopen the PREVIEW YOUR APP and put in another code. Simply repeat this process each time you want to view another demo app.