Explore the live coding development of Confetti, a fullstack conference app, in this 39-minute conference talk from Android Makers by droidcon 2023. Follow along as John O'Reilly and Martin Bonnin demonstrate the creation of a GraphQL-Kotlin backend and Kotlin Multiplatform Mobile (KMM) based clients for both iOS and Android. Dive into the implementation of the graphql-kotlin backend, learn how to leverage the Apollo library's Kotlin Multiplatform support for adding GraphQL queries and shared logic, and observe the development of mobile clients using Jetpack Compose for Android and SwiftUI for iOS. Gain valuable insights into building cross-platform applications with Kotlin and GraphQL technologies.