We build iOS and Android apps from one React Native and TypeScript codebase for teams that need both platforms at once and want a single product team maintaining them.

One shared codebaseExpo build pipelineOver-the-air updates

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03One shared codebase · Expo build pipeline · Over-the-air updates

01Our Approach

We share everything that should be shared and write native code where the platform demands it, without pretending the two never differ.

02Overview

One team shipping to both app stores

01One shared codebase
02Expo build pipeline
03Over-the-air updates

React Native development covers apps for iPhone and Android built from a single TypeScript codebase that renders real native components. It is the right choice when you need both platforms from the first release, when the app is mostly screens, forms, lists and media, or when you already have a React web product and engineers who know it.

We build on Expo and the New Architecture, with strict TypeScript and a shared design system so both platforms stay consistent while respecting their own conventions. Where a feature needs platform code, we write a native module in Swift or Kotlin. If your product is dominated by heavy graphics, complex background work or deep hardware integration, we will recommend fully native development instead.

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03What We Do

Capabilities, End to End

Shared TypeScript codebase

Business logic, API access, state and most screens written once in TypeScript, with platform-specific files only where iOS and Android behavior should differ.

Expo workflow

Expo Router for navigation, EAS Build for signed binaries and config plugins for native settings, so engineers rarely need to open Xcode or Android Studio.

Native modules

Custom modules in Swift and Kotlin for SDKs, sensors or system features without a maintained library, exposed to TypeScript through typed interfaces.

Animation and gestures

Interactions built with Reanimated and Gesture Handler that run on the UI thread, keeping transitions and drags fluid while JavaScript is busy elsewhere.

Over-the-air updates

JavaScript fixes and content changes delivered through EAS Update without waiting for store review, with release channels and rollback for each environment.

Web code sharing

A monorepo that shares types, validation, API hooks and business rules between your React web app and the mobile app, reducing duplicated work.

04In The App

Details Users Can Feel

Side-by-side builds

The same feature running on an iPhone and an Android phone.

Platform conventions

Navigation, pickers and haptics that follow each system's own patterns.

Instant updates

A fix published to installed apps without a new store submission.

Shared logic

Validation and API code imported from the same package as the web app.

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05What You Receive

Handed Over, Ready to Run

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One TypeScript codebase for both platforms

iOS and Android store builds

EAS build and update configuration

Shared component library

Jest and Maestro test suites

Native module source where written

Store listings for both platforms

Upgrade notes for future versions

06How It Runs

From Kickoff to Launch

Confirm the fit

Set the foundations

Build both together

Ship and update

Confirm the fit

We review your feature list against what React Native handles well and flag anything needing native code. If the product is a poor match, we say so before any work is scoped.

Set the foundations

Navigation, state, API layer, design tokens and the build pipeline are set up first, so the earliest screens already ship as installable builds on both iPhone and Android.

Build both together

Every feature is developed and reviewed on both platforms in the same pull request. That stops one platform falling behind and surfaces layout or behavior differences while they are cheap to fix.

Ship and update

We submit to the App Store and Google Play, then set up update channels so later JavaScript changes reach users quickly. Changes to native code still go through a normal store release.

07Technology

The Stack We Use

CoreReact NativeExpoTypeScriptHermesStateZustandTanStack QueryRedux ToolkitMMKVCoreReact NativeExpoTypeScriptHermesStateZustandTanStack QueryRedux ToolkitMMKV

InterfaceExpo RouterReact NavigationReanimatedNativeWindDeliveryEAS BuildEAS UpdateJestMaestroSentryInterfaceExpo RouterReact NavigationReanimatedNativeWindDeliveryEAS BuildEAS UpdateJestMaestroSentry

08Who It Is For

Built for Teams Like Yours

FLAGSHIP

You need iOS and Android from the first release

Your users are split across both platforms and launching on only one would leave part of your market waiting. The app is built from screens, forms, feeds and payments, and you would rather fund one team and one codebase than two parallel native projects.

Startup MVPs on both stores

Mobile companion to a React app

Internal apps for mixed devices

Marketplace and booking apps

Upgrading an old React Native app

Content and community apps

09Questions

What buyers ask before they start

If yours is not here, ask us directly. The first conversation is free and useful whether or not we work together.

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For most apps, yes. React Native renders native views, and with the New Architecture and the Hermes engine, startup and interaction speed are close to native for typical screens. The cases where it struggles are specific, such as heavy real-time graphics, long lists with complex cells that were never tuned, and intensive on-device processing. We profile on mid-range Android phones during development, since problems show there first.

We recommend Expo for nearly every new project, and so does the React Native team. It no longer limits you to a fixed set of features, because development builds and config plugins let you add any native library or your own modules. You gain managed builds, simpler upgrades and over-the-air updates. A bare setup makes sense mainly when you are adding React Native screens to an existing native app.

The logic shares well, and the interface shares less. Types, validation schemas, API access, state management and business rules can live in one package used by both. Screens are usually written separately, because a good mobile layout is not a narrow web page and navigation works differently. We set up a monorepo so shared code has one home, and we give you a realistic estimate after reviewing your web codebase.

Then we write it natively. A native module in Swift and Kotlin can wrap any platform API or vendor SDK and expose it to the TypeScript side with full typing. This is routine work for payment terminals, Bluetooth devices, custom camera pipelines and identity verification SDKs. We identify these needs during scoping so the effort is in the proposal instead of appearing halfway through the build.

Yes. Many React Native apps fall several versions behind, which blocks store requirements and new libraries. We audit the codebase, dependencies and native projects, then upgrade in controlled steps with the app releasable after each one. Where it helps, we move the project onto Expo and the New Architecture, add TypeScript strictness and tests around the riskiest flows, and document what we changed and why.

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