When should we use Expo versus bare React Native?

Expo speeds development with managed builds, OTA updates, and prebuilt native modules, ideal for most apps. Bare workflow or config plugins suit projects needing deep custom native code Expo does not cover.

Can you access device-specific native features?

Yes. We use community packages for camera, Bluetooth, and sensors, and write custom native modules in Swift or Kotlin when needed, bridging any platform API into the JavaScript layer.

How much code is shared between iOS and Android?

Typically most business logic, state, and UI is shared in one codebase. We add platform-specific code only for divergent design guidelines or native features, using Platform APIs and file extensions.

Should you outsource your React Native app, and what should you agree first?

Outsourcing a React Native app works well when the agreement covers who owns what. Agree five things first: the App Store and Google Play accounts are in your company's name, the Expo or bare workflow decision, who owns and maintains each custom native module, the over-the-air update policy, and the handover of signing keys and build credentials when the work ends.

Can over-the-air updates add features without store review?

No. Apple's App Store Review Guideline 2.5.2 says an app may not download or execute code that introduces or changes its features or functionality, and Google Play's Device and Network Abuse policy says interpreted code loaded at run time must not allow policy violations. We use over-the-air updates for JavaScript fixes and send new features through store review.

How long does React Native app development take?

It depends on the number of screens and user roles, the native features and SDKs the app needs, the backend it connects to and the store review steps. We scope a first release on the scoping call and plan the work around it.

Can your React Native developers integrate the app with our existing systems?

Yes. They connect the app to your REST or GraphQL APIs, identity provider, push notifications and analytics, and write native modules when a vendor SDK has no React Native package. We review your API contracts first, so integration gaps show up before the build starts.

Can we start with a fixed-scope MVP?

Yes. We scope a first release around one workflow, for example sign-up through the main task a user opens the app for, and ship it to both stores. Later releases add features once real usage shows what to build next.

How much does it cost to hire React Native developers?

Cost depends on how many React Native developers you need, their seniority, the engagement model and how long the work runs. Agnotic does not publish rates; after the scoping call we propose a team and a plan you can compare.

How do you use AI in delivery without risking quality?

AI tools help our engineers draft code and tests, but a person reviews every change, and it passes the same automated tests and security checks as any other code. Which tools may see your code or data is agreed with you at the start.

Mobile Specialists

Hire Expert React Native Developers On Demand

Building separate iOS and Android apps doubles the code your team has to keep in step. Agnotic Technologies adds React Native developers to your team who ship both apps from one TypeScript codebase and write native modules where the platform needs them.

React NativeTypeScriptExpoRedux/ZustandReact NavigationReanimated

15-Minute Scoping Call

What do React Native developers build?

React Native developers build iOS and Android apps from one JavaScript or TypeScript codebase using React. Agnotic Technologies adds them to your team or runs a dedicated team that sets up Expo or a bare project, writes native modules in Swift or Kotlin when needed, and takes the app through App Store and Google Play review.

Trusted by global innovators

What They Bring

Capabilities of Our React Native Developers

Our React Native engineers deliver native-quality mobile experiences while maximizing code reuse across both platforms.

Native Module Bridging

They write and integrate native modules in Swift, Kotlin, and C++, bridging platform APIs into JavaScript when off-the-shelf packages cannot meet requirements.

Over-the-Air Updates

They ship JavaScript bug fixes quickly with over-the-air update services such as Expo Updates, and send new features through App Store and Google Play review, as both stores' rules on downloaded code require.

Performance Tuning

They optimize list rendering with FlashList, minimize bridge traffic, run smooth 60fps animations on the UI thread with Reanimated, and adopt the New Architecture and Fabric.

Cross-Platform Navigation

They architect navigation with React Navigation, handling deep linking, stack and tab flows, and platform-specific gestures while sharing most screen logic across iOS and Android.

Vetting checklist

What should a React Native developer prove?

Ask for apps in the stores and the code behind them. These are the checks we run before a React Native engineer joins your project.

A React Native app live on the App Store or Google Play, and the screens and modules they built.
The Expo or bare workflow decision on a past project, and why it fit.
A native module or config plugin they wrote in Swift or Kotlin.
List and animation performance work: FlashList or FlatList tuning, and Reanimated on the UI thread.
Tokens kept in the iOS Keychain or Android Keystore, never in AsyncStorage.
An over-the-air update policy that keeps new features inside store review.
Tests with Jest and React Native Testing Library, plus a device test run before each release.

How We Work

Flexible React Native Hiring Options

Flexible hiring structures designed to fit your timeline, budget, and team dynamics.

Senior React Native developers

Engineers who make the calls on navigation, state and native modules, and review the team's TypeScript and native code.

Store-published apps you can review
Code review and mentoring
Decisions on architecture and native code

IT staff augmentation services

Dedicated React Native teams

React Native developers, QA and a tech lead who own the app from scope to store release.

Team size set by the scope
Sprint-based delivery with weekly demos
Scales up or down as the roadmap changes

Dedicated development teams

Simple Process

How to Hire React Native Developers

Four steps from the first call to React Native engineers shipping in your codebase.

Share your requirements

Tell us the platforms, the native features, the backend and the release plan on a 15-minute scoping call.

Review proposed engineers

We propose React Native engineers whose published apps match your scope.

Interview and select

You run technical interviews with the engineers we propose. We arrange them.

Onboard and build

Engineers join your repositories, tools and sprints and start on the first release.

Facts and sources

Which platform rules shape React Native work?

Short facts behind the skills we check, each linked to its primary source.

At runtime, React Native creates the corresponding Android and iOS views for its components, so apps are backed by the same views as other Android and iOS apps.
Source: React Native docs, Core Components and Native Components
Hermes is an open-source JavaScript engine optimized for React Native, and React Native uses it by default with no extra configuration.
Source: React Native docs, Using Hermes
The React Native docs recommend building new apps with a framework such as Expo, which provides file-based routing, universal libraries and plugins that modify native code.
Source: React Native docs, Get started
The OWASP MASVS is the industry standard for mobile app security, with control groups for storage, cryptography, authentication, network communication, platform interaction, code quality, resilience and privacy.
Source: OWASP MASVS

What do clients say about working with Agnotic?

We don't just build products; we forge lasting partnerships. See how we've helped industry leaders transform their vision into technical reality.

“I can clearly see how Agnotic has a unique way of handling end-to-end development. They are always active on quick chat and provide support quickly.”

Aaron Phelan

Founder, Benchmark

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What else do teams ask about React Native developers?

React Native renders real native UI components rather than webviews. The New Architecture with Fabric and JSI removes the async bridge, enabling synchronous native calls and smoother animations via libraries like Reanimated.