Cross-Platform Apps

One codebase. Native on iOS and Android.

React Native app development that ships one TypeScript codebase to both stores, with native speed and over-the-air fixes.

Plan my cross-platform app →How it works

1 codebase2 app storesOTA fixes in minutes

The difference

Two codebases drift apart. One codebase ships together.

Two separate native teams

Double the work

Is the new feature live?

On iOS, yes. Android is two sprints behind.

And the bug fix?

Fixed in one app. Logged for the other.

Delay

Gen7Ven React Native

One release, two stores

Is the new feature live?

Yes, on iOS and Android today.

And the bug fix?

Shipped over the air to both, in minutes.

Momentum

Inside a shared codebase

0% code shared

Domain40%

Components35%

Screens17%

Native3%

Illustrative share of code reused across iOS and Android

01 · Domain

Business logic written once

Data models, API calls, validation and state live in shared TypeScript, tested once.

GraphQL client and cart logic shared

02 · Components

A shared design system

Buttons, forms and lists built once, styled to respect each platform’s conventions.

64 components in Storybook

03 · Screens

Screens for both stores

Navigation and screens assembled from shared parts, with platform tweaks only where users expect them.

iOS swipe-back, Android back button

04 · Native

Native modules where needed

Swift and Kotlin modules for hardware or SDKs that need direct platform access.

Native Bluetooth module, 2 files

Benchmark

Fixes that reach users in minutes

minutesGen7Ven over-the-air updateJavaScript fix via EAS Update

1–3 daysStore releaserebuild, submit, review

2–6 daysTwo native codebasesfix twice, review twice

Use cases

Where React Native fits best

Startup MVPs

Both stores from one budget and team.

Fintech apps

Shared logic, consistent journeys on both platforms.

Commerce apps

Stripe or Shopify checkouts shared across platforms.

Internal tools

One app for staff on any phone.

Built in

Built in to every React Native app

New Architecture

Hermes engine and direct native calls for smooth interfaces.

Over-the-air updates

JavaScript fixes reach users without waiting for store review.

TypeScript throughout

Typed code catches errors before they reach a device.

Native modules

Swift and Kotlin bridges for hardware and platform SDKs.

In depth

React Native app development for iOS and Android

React Native app development lets one team build a single TypeScript codebase that runs as a native app on both iOS and Android. Gen7Ven used React Native in the FinTech mobile banking overhaul that lifted user retention by 42% and earned a 4.9★ App Store rating.

Cross-platform app development without the compromises

Early cross-platform tools felt slow because every interaction crossed a bridge between JavaScript and native code. React Native’s New Architecture, with the Hermes engine and direct native interfaces, removes most of that overhead, so lists scroll and animations run at the device’s frame rate. Interfaces render with real native components, which means system fonts, gestures and accessibility behave as users expect. Where a feature needs deeper access, such as Bluetooth or a vendor SDK, we write a small native module in Swift or Kotlin.

Why teams choose a React Native agency

With one codebase, features are designed, built and tested once, then released to both stores together. There is one backlog, one set of automated tests and one team to coordinate, which reduces drift between platforms and simplifies long-term maintenance and hiring. Over-the-air updates through Expo’s EAS Update let us ship JavaScript fixes in minutes, within store rules, while larger changes go through normal review. As a React Native agency, we also share code with React web apps where it makes sense.

When native is still the better choice

In practice, React Native suits most business, commerce, fintech and productivity apps. It is less suited to graphics-intensive games, advanced augmented reality or apps built almost entirely around one platform’s newest features. During discovery we compare your feature list against these trade-offs and recommend the approach that will cost least to build, run and maintain over the whole life of the product. If native is the better choice, we will say so, and our iOS and Android teams can deliver it.

Expo, CI and release automation for cross-platform apps

We build most React Native projects on Expo, which provides a maintained set of native libraries, cloud builds and over-the-air updates. Every commit runs type checks, unit tests and end-to-end tests through continuous integration, then produces signed builds for TestFlight and Google Play testing tracks automatically. Release channels separate internal, beta and production users. In practice, this automation means both platforms are always ready to ship, and a release becomes a routine decision rather than a stressful event for your team.

Plugs into

Works with the React ecosystem and your stack

ReactTypeScriptExpoFirebaseGraphQLApollo GraphQLStripeSupabaseSentryStorybook

FAQ

Cross-Platform Apps: common questions

Is React Native as fast as native development?

For most business apps, users cannot tell the difference. React Native’s New Architecture and the Hermes engine remove much of the old bridge overhead, and interfaces use real native components. For graphics-heavy games or advanced augmented reality, fully native code still has the edge, and we will recommend it where that matters.

Can a React Native app use native features and SDKs?

Yes. Most device features, including camera, biometrics, push notifications, maps and payments, are available through well-maintained libraries. Where a feature or vendor SDK has no library, we write a native module in Swift and Kotlin and expose it to the shared code, so you never lose access to the platform.

What are over-the-air updates in React Native app development?

Over-the-air updates let us deliver changes to the JavaScript part of a React Native app directly to users, without waiting for store review. They are ideal for bug fixes, copy changes and small interface updates. Changes to native code or app permissions still go through the App Store and Google Play, in line with store rules.

Should we choose React Native or Flutter?

Both are capable cross-platform frameworks. React Native uses TypeScript and native interface components, which suits teams with web or React experience and allows code sharing with React websites. Flutter draws its own interface and uses Dart. We specialise in React Native and will explain the trade-offs honestly for your product and team.

Cross-Platform Apps

Ready to launch on both stores?

Tell us about your app. We will show how much can be shared and what a first release looks like.

Start your project →All App Development