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App.js Conf 2025

Join us on the biggest React Native & Expo-focused conference.

Create universal native apps with React that run on Android, iOS, and the web. Iterate with confidence.

Trusted by top companies

We are the home for developers building native apps across Android and iOS with JavaScript (neat, right?). We’re open source. Offer a free plan. And are pretty-much the go-to if you’re building a mobile app.

We’re a full ecosystem of tools that help you write, build, update, submit, and monitor mobile apps. App store submission a pain? We’ve got you. Want developer tools in your app? Done. Our application services are built to help you ship faster. And if you get stuck, join our community of developers or say hello and meet our team.

Behind every movie is a production team. Behind every great chef, someone running the restaurant. We’ll take care of the slow stuff so you and your team can focus on building the world’s best apps.

Develop

Get started

Initialize a new project or bring an existing React Native project.

Expo CLI

File-based routing, TypeScript ready

Create stack and modal screens with minimal boilerplate using your filesystem. Feel confident with TypeScript.

File-based routing

Get going, then keep going with fast refresh

Run your project on your own device with Expo Go. See your app update in milliseconds as you make changes.

Use any library, SDK, or write your own native code

You’ll never be limited by Expo. Write native code. Access every device API. Write anything, then run it everywhere.

Maps API showcase

Maps

Camera API showcase

Camera

Image API showcase

Image

Navigation API showcase

Navigation

Review

Invite your team

With adjustable roles, your whole team can contribute, test, and view the state of your deployments.

Upgrade your PR reviews

Commit, push to GitHub, and generate a QR code. That’s all that’s needed to let your team review a feature before merging.

Run end-to-end tests

Use Maestro to run automated end-to-end tests on EAS.

Fast refresh

Deploy

Create and submit app store-ready builds

Kick off a build. Then we’ll submit it to the App Store and Play Store automatically if you like.

Publish bug fixes in minutes

Found a typo on your home screen? Don’t sweat: fix it, then publish an update that your users will receive the next time they launch your app.

GitHub bot

Dashboards to keep your team on track

We keep track of all of your builds, submissions, and deployments, organized on web dashboards for your whole team.

Iterate with confidence

With flexible deployment patterns and the ability to rollback in seconds, you can iterate faster than ever before.

An open-source platform built for production apps

Services made for professionals

And you’ll get so much more…

Organization accounts. Production-like development server. Developer tools built in. Automatic native code configuration. Use any native code. Simulator builds. File-based routing. Automatic build submissions. App store metadata verification. Usage-based pricing. Team credential management.

Preview updates with a QR code. Save app store metadata. Automatic app store credentials management. Ad-hoc builds. End-to-end code signing. Build logs. Member roles. Web dashboards. Submission logs. Top-notch universal modules. Expo Discord community. End-to-end testing.

Regular SDK releases. Apple silicon builders for iOS. Automatic version incrementing in CI. GitHub Actions-ready. Shareable Snack playgrounds. VS Code extension.

Get Started

Try it for yourself

Fast animations. Genuine native components. Edit in your browser and preview on your device in seconds.

Runs natively on:

Android

iOS

Web

Finance app

Track expenses. 60 FPS animations.

Try It

Image app

Upload images. Add stickers. Save to device.

Try It

Build It Step-by-Step

Social media app

Native navigation. Fast lists. Ready to scroll.

Try It

William Candillon

wcandillon

The speed at which React Native Web via has evolved in the past 6 months is absolutely wild. My head is spinning.

Trevor Hartman

@devth

Expo recently made it possible to target web, so you can write a single UI for native and web. I’m continually impressed. Otherwise next.js by @zeithq is incredible. Both of these projects have amazing docs, DX, and fast release cycles.

Jamon Holmgren

@jamonholmgren

So @expo’s over the air update feature just saved us on launch day (yes, Friday, sorry). We had a crash happening on a critical path (didn’t happen in dev testing) but narrowed it down and deployed a fix using OTA in about an hour.

Annie Elequin

@AnnieElequin

@expo made notifications so easy, I almost cried tears of joy 😭 using expo is just a delightful experience

Ryan Baldwin

@bakerofbytes

It’s difficult to make a tool that is powerful, easy to use, and stays out of the way. @expo has figured it out and it’s one of the most pleasurable dev experiences I’ve had in my career.

Casey Li

@caseyli23

I love how @expo allows me to build my standalone apps remotely on their much more powerful servers! Saves time and allows me to continue to use my computer while I wait for the build!

The Big Red Geek

@thebigredgeek

I think @expo is one of the most beautiful ****ing pieces of engineering I’ve seen in a very long time

Tyler H

@Ipse_dixt_T

Arkansas Western District Court uses expo web. I chose @expo because it was the fastest way for a single developer to achieve our mandate—mobile/desktop/web.

Rafael Mendiola

@GroundControl

From the Q&A panel: "If I were starting a new React Native app I would use @expo". The whole group endorsed it #ReactNativeEU

Lisa Miller

@LisaMillerCool

If you are planning to develop an app using react native, it's a no-brainer to go with Expo. It's like a package of goodies. I don't even understand why it's so awesome. Good job @expo team. You've made our lives simpler.

Wes Johnson

@WesleyJohnson

As a career-long web developer, getting push notifications working in @reactnative via @expo feels like black magic. Loving it.

ipey

@irfan__zainudin

It is so easy to build your own mobile app nowadays. With technologies like @reactnative and @expo, literally anyone with an idea can rapidly build their dream app. What a time to be alive!

Mat Warger

@mwarger

I don't know who needs to hear this but @expo is the future.

William Candillon

@wcandillon

The speed at which React Native Web via @expo has evolved in the past 6 months is absolutely wild. My head is spinning.

Trevor Hartman

@devth

Jamon Holmgren

@jamonholmgren

Annie Elequin

@AnnieElequin

@expo made notifications so easy, I almost cried tears of joy 😭 using expo is just a delightful experience

Ryan Baldwin

@bakerofbytes

It’s difficult to make a tool that is powerful, easy to use, and stays out of the way. @expo has figured it out and it’s one of the most pleasurable dev experiences I’ve had in my career.

Casey Li

@caseyli23

I love how @expo allows me to build my standalone apps remotely on their much more powerful servers! Saves time and allows me to continue to use my computer while I wait for the build!

The Big Red Geek

@thebigredgeek

I think @expo is one of the most beautiful ****ing pieces of engineering I’ve seen in a very long time

Tyler H

@Ipse_dixt_T

Arkansas Western District Court uses expo web. I chose @expo because it was the fastest way for a single developer to achieve our mandate—mobile/desktop/web.

Upgrade your team’s workflowand iterate with stability.

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