Yes, you can use this app with your reborn doll, Katelyn! The app is designed to provide an interactive experience for children of all ages. It offers various features that allow you to take care of your virtual baby, just like you would with a real one. You can feed, dress, and play with your reborn doll through the app. It also provides educational activities and games that are both fun and engaging. So go ahead and enjoy taking care of your virtual baby with the help of this app!