How can I inject a

actual

class with Koin? I have:

fun initKoin(appDeclaration: KoinAppDeclaration = {}) {
    startKoin {
        appDeclaration()
        modules(datamodule, domainModule, presentationModule, platformModule)
    }
}
// commonMain
expect val platformModule: Module
// iosMain
actual val platformModule = module {
    single { StorageRepository() }
}

// storageRepository
internal actual class StorageRepository: KoinComponent { 
   ... code to store key value use sharedpref and userdefault
}

But in my swift project I cant use

storageRepository

What is wrong?

you to inject it into a class you can instantiate in iOS. Take a look at this tutorial: https://insert-koin.io/docs/quickstart/kmm