---
title: "Brownfield (page 3 of 3)"
description: "Integrating React Native into existing iOS and Android applications"
url: https://www.callstack.com/insights/brownfield-react-native/3
updated: 2026-10-22T13:55:50.377Z
---

# Brownfield (page 3 of 3)

Integrating React Native into existing iOS and Android applications

## Page 3 of 3

- [Lessons from Shopify's Migration to React Native with Mustafa Ali](https://www.callstack.com/podcasts/lessons-from-shopifys-migration-to-react-native-with-mustafa-ali) (podcast, 1/13/2025): Learn how Shopify's migration to React Native led to 86% code unification, reduced build times, and seamless feature parity across platforms.
- [How to Upgrade React Native in a Brownfield Application](https://www.callstack.com/blog/how-to-upgrade-react-native-in-a-brownfield-application) (Article, 11/28/2024): Learn how to upgrade React Native in a brownfield app with practical tips and solutions. Ideal for complex app migrations from React Native 0.71 to 0.76.
- [How to Integrate React Native With an Existing App](https://www.callstack.com/blog/how-to-integrate-react-native-with-an-existing-app) (Article, 11/25/2024): Learn how to integrate React Native into an existing mobile app with this step-by-step guide, using the Mastodon app as a testing ground.
- [Why Brownfield Development With React Native Is Worth Your Attention](https://www.callstack.com/blog/brownfield-development-with-react-native) (Article, 11/18/2024): Reduce time-to-market, development cost, and move faster with features by implementing React Native with a brownfield approach.
- [Simplify Your iOS Brownfield Integration With RootViewFactory](https://www.callstack.com/blog/simplify-your-ios-brownfield-integration-with-rootviewfactory) (Article, 10/1/2024): Learn how RootViewFactory streamlines brownfield integration and helps migrate existing iOS apps to React Native efficiently.
- [Adding React Native to an Existing Flutter App](https://www.callstack.com/blog/adding-react-native-to-an-existing-flutter-app) (Article, 7/24/2024): Discover how to integrate React Native into an existing Flutter app, leveraging platform views and setting up on both Android and iOS.
- [Migration to React Native](https://www.callstack.com/podcasts/migration-to-react-native) (podcast, 6/14/2022): The 13th episode of React Universe On Air (formerly known as The React Native Show) is fully focused on migrating from different technologies to React Native, the two most popular approaches to this process (greenfield and brownfield software development), and our state-of-the-art brownfield approach.
- [Migrating React and Native Apps To React Native - Everything You Need To Know](https://www.callstack.com/blog/migration-to-react-native) (Article, 4/19/2022): Migrate seamlessly from native to React Native - greenfield, brownfield, and best practices covered!
- [Brownfield Development With React Native](https://www.callstack.com/podcasts/brownfield-development-with-react-native-6) (podcast, 6/8/2021): Learn how to tackle brownfield development with React Native, explore real-world challenges, and discover the React Native Brownfield library.
- [iOS Brownfield App With React Native in an Easy Way](https://www.callstack.com/blog/ios-brownfield-app-with-react-native-in-an-easy-way) (Article, 9/6/2019): Wondering how to build an iOS brownfield app with React Native? This article will guide you through the process step by step.
- [Developing an Android Brownfield App With React Native in an Easy Way](https://www.callstack.com/blog/android-brownfield-app-with-react-native-in-an-easy-way) (Article, 9/6/2019): Wondering how to build an Android brownfield app with React Native? This article will guide you through the process step by step.