Not a wedding photo app per se, Yapp allows couples to create a self-made mobile app for anything, including a wedding. Simply visit Yapp.us from a computer, choose a theme, name the Yapp Event, personalize it with a photo, enter event info, and publish. Publishing creates a link or QR code that couples can send to guests. Guests will be invited to download YappBox, which will house the Yapp. Once they install the app on their smartphones they can share photos and messages in the News Feed. Couples may also connect a Twitter feed to the News Feed, allowing more photos to stream to the app.