How to migrate from native to React Native?

The Hidden Tax of Multi-Platform Development

Most organisations today are still building every feature three times—once for iOS, once for Android, and once for web. This approach creates a hidden tax on development velocity that manifests in several critical ways:

• Inconsistent user experiences as features evolve at different rates on different platforms
• Large orchestration overhead with significant energy spent coordinating across teams
• Divergent roadmaps causing slower releases and missed deadlines
• Duplicated effort across platforms leading to wasted engineering resources

The React Native Solution

React Native offers a compelling alternative: a single codebase that powers iOS, Android, and web (via React Native Web). This approach transforms how organisations build and maintain their digital products:

• Future-proof architecture — Create a foundation ready for AI-driven innovation
• Reduced engineering costs — Lower maintenance overhead and development resources
• Consistent user experience — Maintain feature parity across all platforms
• Faster iteration cycles — Ship updates more frequently with coordinated releases
• Build once, deploy everywhere — Develop features once and release across all platforms

Why React Native Migration Makes Sense Now

• Talent leverage — One React Native engineer can effectively cover iOS, Android, and web development
• Market pressure — Competitors who have consolidated their development can ship weekly instead of quarterly
• AI-powered migration tools — New technologies have dramatically reduced the manual effort required
• Platform maturity — React Native has been battle-tested by tech giants like Meta, Microsoft, and Shopify at massive scale

Assessing Your Migration Readiness

Before embarking on a migration journey, it's essential to evaluate your organisation's readiness. Key readiness factors include technical debt, business priorities, team composition, and app complexity.

Migration Approaches: Choosing Your Path

There are three primary approaches to migrating from native to React Native:

1. Incremental Migration

Gradually replacing native components with React Native modules while maintaining the existing native container application. This offers opportunity for team up-skilling, continuous delivery during migration, and lower initial risk.

2. Parallel Development

A new React Native application is built alongside the existing native apps, with a planned cutover once feature parity is achieved. This works well when clean separation between old and new systems is desired, or when a major redesign is already planned.

3. Complete Rewrite

Rebuilding the entire application in React Native from the ground up. While more resource-intensive initially, it may be appropriate when the current application is relatively small, a significant pivot is occurring, or the existing application has fundamental architectural issues.

Technical Migration Framework

Phase 1: Discovery and Planning

• Codebase audit — Analyse existing native codebases to identify complexity hotspots and reusable components
• Success metrics — Define clear KPIs to measure migration progress and success
• Migration roadmap — Create a detailed plan prioritising components based on complexity and business value
• Architecture design — Develop a target architecture that leverages React Native's strengths

Phase 2: Foundation Building

• Development environment setup — Configure a robust environment supporting both native and React Native code
• Design system migration — Convert your design system to React Native components
• Bridge implementation — Create necessary bridges between React Native and native code
• CI/CD pipeline adaptation — Update pipelines to support the hybrid codebase

Phase 3: Incremental Implementation

This is where proprietary migration technology can dramatically accelerate the process. Traditional approaches required manual recreation of every component, but modern tools can automate significant portions—automated code conversion, component mapping, bridge development, and testing automation.

Phase 4: Optimisation and Scaling

• Performance tuning — Optimise components for performance, especially list views and animations
• Bundle optimisation — Implement code splitting and lazy loading to minimize bundle size
• Memory management — Address any memory leaks or excessive resource usage
• Platform-specific enhancements — Add platform-specific optimizations where necessary

Best Practices for Migration Success

Start with a comprehensive audit. Implement a strong architecture foundation. Focus on developer experience. Measure and optimise continuously. The key is combining technical expertise with organisational change management to ensure a smooth transition.

At Paloma Digital, we've refined our migration process across multiple enterprise projects, developing proprietary technology that reduces migration time by 30-50% compared to traditional approaches.