Expo is a set of tools and services for React Native that speeds up development, handles builds and signing, and enables over-the-air updates.

Can we share code with our website?

Often, yes. Logic, types and API code can be shared, and with the right setup some UI too.

Can you take over an existing React Native app?

Yes. We audit it first, upgrade dependencies if needed and then continue development or maintenance.

React Native & Expo App Development

04 · Mobile App Development02 of 07

React Native and Expo apps that feel native on iPhone and Android, built once and shipped faster.

For most business apps, writing everything twice is wasted money. React Native with Expo lets us build one codebase that runs natively on iOS and Android, ship fixes over the air and share code with your web app, without compromising how the app feels.

Start a project

What's included

Codebase for iOS and Android: 1; Codebase for iOS and Android
Over-the-air updates for eligible fixes: OTA; Over-the-air updates for eligible fixes
TypeScript end to end: TS; TypeScript end to end

App.tsxapp.json

$ eas build --all

Live · tests passed

Cross-platform (React Native / Expo) · illustration

React NativeExpo and EASOne shared codebaseNative modulesOver-the-air updatesTypeScriptShared web codeAutomated buildsReact NativeExpo and EASOne shared codebaseNative modulesOver-the-air updatesTypeScriptShared web codeAutomated builds

Sound familiar?

The problems we hear most often before someone asks us about cross-platform (React Native / Expo).

Paying for two teams

Separate iOS and Android teams mean double the cost, and the two apps slowly drift apart in features.

Fixes stuck in review

Every small bug fix waits for app store review, leaving users with the problem for days.

Worried it won't feel native

Older cross-platform tools felt clunky, so teams assume they must go fully native.

What's included

React Native and Expo setup

A modern TypeScript project with Expo's tooling for builds, updates and device features.

Native look and feel

Platform-appropriate navigation, gestures and components, so it feels at home on both systems.

Native modules when needed

Custom native code for anything the shared layer can't do, such as specialised hardware.

Over-the-air updates

Ship eligible fixes and content changes straight to users without waiting for store review.

Automated builds

EAS pipelines that build, sign and submit both apps consistently.

Code sharing with web

Business logic, types and API clients shared with your web app where it makes sense.

How we do it

01/ 04

You follow every step live in Mission Control, your project dashboard: tasks, files, approvals and a launch forecast.

1
Assess
We confirm cross-platform is right for your features, and plan any native pieces.
2
Set up
Project, design system, navigation and build pipeline in place from week one.
3
Build
Features in sprints, tested on both platforms continuously.
4
Ship
Store submissions, then over-the-air updates for fast fixes after launch.

Codebase for iOS and Android

OTA

Over-the-air updates for eligible fixes

TypeScript end to end

Built for

Who this is for.

Startups that need both platforms on one budget

Teams with React or web developers

Businesses replacing two drifting native apps

Products that change often after launch

Tools we useReact NativeExpoSwiftKotlinNode.jsPostgreSQLFirebaseStripe

Helpful extras

Try it yourself, or see what's built in.

Built in · AILaunch Probability ConeNot a deadline. A probability.See how it works

Questions

Cross-platform (React Native / Expo), answered.

Something else on your mind? Ask the Zelvorm Concierge in the corner, or talk to the team.

For the large majority of business and consumer apps, users can't tell the difference. Heavy 3D, complex audio or video processing, or deep platform features may still be better native.