Use iMessage Apps to Spice Up Your Convos
You can install tons of iMessage apps that you can use to add to your conversations. You may be using Bitmoji with a keyboard already, but you can install it as an app, or you can install iMessage apps from a wide range of developers to play games, send stickers and add more to your conversations.
In addition to simply adding funny items to the conversation, you can send polls, send money, send movie information, send your eta to someone and much more.
You install these in the main app store on your iPhone and then they will appear in the Messages app. Just tap on the small app store icon or scroll through them at the bottom of the screen.