This hands-on course covers the building of an iOS application that allows two types of extensions: messages and stickers. For the Messages extension demonstration, a basic utility app and a game app are created. For the sticker demonstration, a sticker extension is created, a demo that includes creating artwork and adding it into a message. Join Todd Perkins as he shows you how to lay out your app UI, code the desired behavior into your app's objects, and connect your app to Messages by leveraging extension functionality.