Brownfield development with React Native allows teams to gradually integrate React Native into existing iOS and Android apps without a full rewrite. This approach preserves revenue continuity, reduces development costs by up to 50%, enables 80–95% code sharing, and allows faster time-to-market. Unlike greenfield projects, brownfield integration works within existing native infrastructure, replacing screens or components incrementally. Callstack also maintains an open-source React Native Brownfield library to help teams navigate the complexity of merging Android, iOS, and React Native codebases.
Table of contents
Greenfield and brownfield development in React NativeWhat makes Brownfield and React Native a perfect match?Benefits of integrating React Native in a brownfield waySummarySort: