We use view models along with coordinator to manage the app entire flow & interactions. We don't use any special library to build view models. In general:

• A view model will be a normal class with some methods defined.
• A view model will have a private router property related to their Coordinator — Manage App Flow.
• A view model will have one or many RxSwift — Handle Interactions properties. A view model is where we keep state.

import RxCocoa
import RxSwift
import XCoordinator

final class SomeViewModel {
	private let router: WeakRouter<SomeRoute>
	private let authToken = BehaviorRelay<String?>(value: nil)

  init(router: WeakRouter<SomeRoute>) {
		self.router = router
	}

	// MARK: Data
	
	public func authInit() {
		// Call network...
		authToken.accept("TOKEN")
	}

	// MARK: Actions

	public func goIntoApp() {
		router.trigger(.main)
	}

	public func logout() {
		router.trigger(.onboarding)
	}
}