The JavaScript and React ecosystem
npm libraries, TypeScript and the web team’s React skills carry over to mobile, sometimes with logic shared between web and mobile.
Expertise · React Native
React Native Development: iOS and Android Mobile Apps
Etixio delivers React Native development for your mobile apps: React code shared between iOS and Android that incorporates each platform’s specific features and constraints. We design, build, publish and maintain the app, including its AI features.
Understanding the technology
React Native in your project.
React Native lets you build mobile apps with React while relying on the capabilities of the target platforms. Part of the code can be shared, but native interactions, permissions and distribution keep their own constraints. We connect this shared foundation to how the product is actually used.
The benefits for your product
Why choose React Native?
React Native, maintained by Meta and a large community, is a natural choice when your product already has a React web application or a JavaScript and TypeScript team.
A large share of common code
Most of the app is shared between iOS and Android; only certain native integrations require platform-specific code.
Native components
The interface relies on each platform’s native components, and the new architecture (Fabric, TurboModules, JSI) reduces the cost of communicating with native code.
Fast iterations
Hot reloading (Fast Refresh) and Expo speed up development, on-device testing and builds.
Over-the-air updates
JavaScript fixes can be shipped without a new store submission (EAS Update), in line with Apple’s and Google’s rules.
Our scope of work
The work we take on.
Interface
Design journeys and components for mobile use.
Native bridges
Integrate device features and check module compatibility.
Delivery
Test journeys, network errors and distributed builds on the target devices.
Our React Native expertise
The React Native stack we master.
Core
React Native and its new architecture, the Hermes JavaScript engine, TypeScript, Expo and EAS for builds and updates, or React Native CLI when native control requires it.
State management & data
Redux Toolkit for structured applications, Zustand for simplicity, TanStack Query for caching and syncing with APIs.
Navigation & interface
React Navigation or Expo Router, deep links, gestures and animations (Reanimated), themes and component libraries.
Native modules
TurboModules and Expo modules, camera, geolocation, Bluetooth, payments, notifications; custom modules in Swift or Kotlin when needed.
React Native extends our React.js and JavaScript / TypeScript expertise.
Our approach
From design to publication.
Scoping
Priority journeys, required native features, architecture and environment setup.
Development
Incremental releases in short sprints, continuous integration and code reviews.
Quality
Automated tests and functional checks on the target iOS and Android devices.
Publication
Signing, submission to the App Store and Google Play, performance and error monitoring.
Evolution
Maintenance, dependency and OS updates, new features.
React Native and AI
AI features in your mobile app.
A conversational assistant, natural language search, reading a photographed document or voice input: these features can be integrated into a React Native app. Model calls go through your back-end to protect keys, control the data sent and track costs; on the app side, we take care of progressive display of responses, loading states and errors.
See our AI solutions for businesses.
In the field
From technology to real-world use.
For a mobile customer portal, we build authentication, screens and API exchanges. Notifications, link handling and network changes are built into the journey. We also check what happens when the app is interrupted and then relaunched during an operation.
The choices that matter
The choices to examine before building.
The choice depends on the native features, the existing React codebase and the ability to maintain the modules used. Differences between iOS and Android must be tested. A dependency update may require native adjustments; this work is part of maintaining the product.
From work to deliverables
Delivery your team can take over.
The scope of work specifies the components to build or take over and the acceptance criteria. We provide what is needed to understand the changes, verify them and continue the work.
- App and integrations
- Journeys tested on the target devices
- Distribution preparation
Frequently asked questions
React Native development: your questions.
What is React Native and why is it so widely used?
React Native is an open source framework created by Meta for building iOS and Android mobile apps with React and JavaScript or TypeScript. It lets a web team reuse its skills and part of its code, with a very large ecosystem.
Is React Native suitable for enterprise applications?
Yes. Many companies use it in production, for both consumer and B2B apps. Its mature ecosystem and the ability to rely on a JavaScript team make it a good choice for a cross-platform app maintained over the long term.
What is the difference between React Native and Flutter?
React Native uses JavaScript or TypeScript and each platform’s native components; Flutter uses Dart and draws its own interface. React Native suits teams already skilled in React; Flutter offers very consistent rendering across platforms. Both can deliver high-quality apps.
How is state managed in React Native?
Redux Toolkit for complex, structured applications, Zustand for simpler needs, TanStack Query for data from APIs. The choice depends on the size of the app and the team.
How does React Native perform?
Well for the vast majority of apps. The Hermes engine and the new architecture have significantly reduced latency. For demanding animations, Reanimated runs the computations on the native side; we measure on real devices.
Expo or React Native CLI?
Expo is now the recommended starting point, including for production apps, thanks to its builds (EAS) and over-the-air updates. The CLI or Expo development builds are required when specific native modules are needed.
How do you publish a React Native app?
The app is built for iOS and Android, signed, then submitted to the App Store and Google Play. We automate these steps with EAS Build or Fastlane and a continuous integration pipeline.
Can AI features be added to a React Native app?
Yes. An assistant, natural language search, document reading or voice input can be integrated into the app, with model calls going through your back-end for security and cost control.
What engagement models do you offer?
A fixed-price project to design and publish an app, a dedicated team to evolve it over the long term, or a targeted engagement: performance, animations, migration to React Native or to the new architecture.
Let’s talk about your technical context.
Tell us about the application, the issue to address and the known constraints. We will review the dependencies and the initial scope of work with your team.