---
title: "MVI State Machines: One Architecture for Compose and SwiftUI"
published: true
description: "Build an MVI state machine in pure Kotlin that drives both Jetpack Compose and SwiftUI views across KMP projects — with working code, testing patterns, and common pitfalls."
tags: kotlin, swift, architecture, mobile
canonical_url: https://blog.mvpfactory.co/mvi-state-machines-one-architecture-for-compose-and-swiftui
---
## What We Will Build
In this tutorial, I will walk you through building a production-grade MVI (Model-View-Intent) state machine in pure Kotlin that drives both Jetpack Compose and SwiftUI from a single shared core. By the end, you will have a working `Store` class in KMP `commonMain`, a concrete login feature with a pure reducer, platform bindings for both Compose and SwiftUI, and a test suite that runs on JVM in milliseconds.
Let me show you a pattern I use in every project — one that cut our feature-level UI bugs by roughly 40% in production.
## Prerequis
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