Yapp presents a do-it-yourself advance into the world of mobile apps. The introductory service is free, and creating an app for a conference, a wedding, a sports team, or some other event or organization is surprisingly easy. First, select an app design from dozens of themes and then enter text, photos, and other personalizing content. Pressing Publish generates a link that can be shared with friends or coworkers so they can download and use the app you've created. From there updates and push notifications can be sent in real time. For most users, the process of creating and sharing an app can take less than ten minutes.