Do you have experience developing applications in Kotlin considering a cross-platform architecture?

Yes, development with Kotlin using a cross-platform architecture involves using Kotlin Multiplatform Mobile (KMM), which allows writing shared code for iOS and Android.

Main points:

• Common business logic and data models are written in Kotlin and compiled for both platforms.
• Platform-specific code (UI, access to platform APIs) is implemented separately.
• This reduces code duplication and speeds up development.

Example of shared code:

expect class Platform() {
    val name: String
}

fun createApplicationScreenMessage(): String {
    return "Hello from the platform ${Platform().name}!"
}

On iOS and Android, specific versions of the Platform class are implemented, while the rest of the code remains shared.