Jetpack Compose is the new UI framework for Android from Google. Can I take an existing large open source Android app and get the benefit of what compose offers? This talk is a practical report of adding the new UI framework to an existing consumer app. The app I have chosen is Habitica the very popular habit tracking app. I am presenting this exploration as a travel diary of sorts. It will include: * Lay of the land: looking at the existing code architecture and assessing where best to add the new framework * A map and a plan: opinions on architectural choices that make migration easier * Lists and Columns: a practical demonstration of how to port existing UI * Here be monsters: recounts of trials and tribulations of working with the existing code and the new framework * Home again: a demo