2025-07-16 00:00:00 With Yapp, you can view the mobile app for your conference, social event, group, sports team, school, local business, and more. ★ To create your own mobile app, go to https://www.yapp.us ★ Want to give Yapp a try before making an app? To see a sample, tap "View a Yapp" and enter DEMO in the bottom field.