Our approach enables safe, incremental React Native adoption, allowing you to leverage cross-platform capabilities and reduce technical debt without full-scale migration risks. To simplify working with new technology, we encapsulate everything separately for mobile and web developers.

HOW WE CAN HELP

OUR APPROACH WORKS PERFECTLY FOR AN ENTERPRISE LOOKING TO:

Implement the same React Native feature into multiple native apps simultaneously
Transition from native apps to a cross-platform ecosystem
Reduce feature parity gaps between platforms

USE CASES

Use Case 1: Introduce React Native Features to Native Apps

PROBLEM

Two native app versions (Android and iOS) require separate development efforts.

STEP 1

Develop cross-platform features using React Native.

STEP 2

Inject these features into both native apps without rewriting the entire codebase.

STEP 3

Share code seamlessly, maintained by a unified team.

OUTCOME

Reduce duplication of work, streamline teams, and start your journey toward cross-platform efficiency.

benefits

Preserved Legacy Value

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Keep what works while upgrading incrementally, reducing risk and maximizing ROI.

Stable Business Continuity

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Maintain your app’s availability and performance during the migration process.

Cost Reduction

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Unify teams for Android and iOS and reuse native code to reduce costs up to 50%.

Inclusive Applications/
Consistent UI

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Provide your customers with inclusive apps that work the same on every platform.

Better Time Efficiency

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Reuse existing native code, but expand the app in JavaScript.

Live and OTA Updates

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Push updates without requiring app store submissions.

VALUE WE DELIVER

Why Partner With Callstack

We’ve partnered with global enterprises to deliver successful React Native migrations, leveraging our brownfield approach to ensure a secure transition. As contributors to React Native’s ecosystem, we don’t just use the tools—we build and maintain them. From open-source libraries to custom solutions tailored to your needs, our team’s expertise in the React Universe is unmatched.

Community Leaders

Top App Performance Experts

open source contributors

meta's official partners

React Universe Conf Organizers

your story is next

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“Callstack played an essential role in helping us release our mobile app to the market. They helped us set up and optimise our mobile ecosystem.”

Donovan Isherwood - Engineering Manager

Thriva

Refreshing WorkflowGen App by Advantys

run your business on REACT UNIVERSE

React Universe combines front and back-end development with cross-platform capabilities using a single programming model to make faster, better apps.

Learn more

FAQ

YOUR QUESTIONS ANSWEReD

Got questions about brownfield migration to React Native? Here’s a quick guide to our process, approach, and how we ensure a smooth and effective transition for your app.

Will React Native match the performance of our existing native code, especially in complex parts of our app?

We know performance is crucial. We keep it on the highest level with techniques like lazy loading and native module optimization, robust monitoring tools, and an incremental migration approach that tests React Native components in real-world scenarios.

Our native teams are already at capacity. How can we transition to React Native without disrupting their workflows?

We prioritize a smooth transition for your native teams through developer-friendly tools, comprehensive training, incremental adoption, and ongoing support tailored to your team’s needs.

How can we minimize the risk of bugs or regressions during the migration process?

We mitigate the risk of regressions with detailed assessments, incremental migration, automated testing, and rollback mechanisms for quick issue resolution.

With tight release cycles, how can we ensure the migration won’t disrupt schedules or delay time-to-market?

Our approach minimizes disruptions by enabling parallel development, gradual integration of React Native, and aligning with your release cycles through close collaboration.

Will the resulting app architecture be scalable and maintainable in the long term?

We ensure scalability and maintainability with modular architecture, reusable components, best practices, and thorough knowledge transfer to empower your team.