MVVM is the most widely adopted architecture for mobile apps. This guide walks through a complete MVVM implementation for both Android with Jetpack and iOS with SwiftUI.
Model-View-ViewModel (MVVM) separates UI logic from business logic, making apps testable, maintainable, and scalable. Both Android and iOS ecosystems have first-party support for MVVM, making it the natural default for new projects in 2026.MVVM on Android with ViewModel and StateFlowOn Android, the Jetpack ViewModel class survives configuration changes and provides the ViewModel layer. Your ViewModel holds StateFlow properties that represent the complete UI state as a single sealed class or data class ? never expose mutable state directly. The View (Fragment or Composable) collects the state f...
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