How to Inject application context from 'app' module to 'network' module using Koin DI

Both answers by @Rajat and @Andrey are correct. In fact if you look at the sources, you will see that androidContext() is just an extension function to get(), so these 2 definitions are identical:

val appModule = module {
    viewModel { LoginViewModel(get()) }
}

...

val appModule = module {
    viewModel { LoginViewModel(androidContext()) }
}

Answering your question, since get() and androidContext() are members of the module DSL object, you could do this:

val networkModule = module {
   single { Network(androidContext()) }
}

Or simply (I prefer this one for brevity):

val networkModule = module {
   single { Network(get()) }
}

Application context is available inside a module through the function androidContext().

val appModule = module {
    viewModel { LoginViewModel(androidContext()) }
}

This should solve your problem.