Apple has made a 10-minute promotional film that was released today on its YouTube channel highlighting a number of real-world uses for its iOS technologies and apps that are making a difference in the lives of people around the globe. The video itself is titled Making a difference. One app at a time and shows iPad and iPhone users and developers showing and talking about the way an app has changed their life. The video reflects remarks from CEO Tim Cook that the company's marketing efforts would focus more on the effect of its work rather than touting products.