Building cross-platform mobile apps with Kotlin Multiplatform

Kotlin Multiplatform Mobile (KMM) is a software development kit designed to facilitate the creation of cross-platform mobile applications by allowing developers to write the core logic of an app in Kotlin, which can then be used for both Android and iOS, requiring platform-specific code only for the user interface. This approach minimizes the redundancy of rewriting core components for different platforms and leverages the familiarity of Android developers with Kotlin. The text provides a detailed guide on setting up the development environment, creating a KMM project, and understanding its structure, which consists of Android, shared, and iOS modules. It illustrates the process through a practical example of building a note-taking application that uses SQLDelight for database operations, demonstrating how common business logic can be reused across platforms. The guide also explains how the Kotlin compiler converts Kotlin code into native code for each platform, thus enabling cross-platform functionality. Additionally, the article mentions LogRocket as a tool for monitoring Android apps, offering insights into user interactions and performance issues.