Expo Development: Ship React Native Apps Faster

Expo is a platform built on top of React Native that provides managed cloud builds (EAS Build), over-the-air updates (EAS Update), a rich SDK of pre-built native modules, and a file-based routing system (Expo Router). It eliminates most of the native toolchain setup and maintenance burden, letting teams ship faster with fewer DevOps headaches.

Managed Workflow means Expo controls the native projects - you don't write Xcode or Android Studio project files. Bare Workflow gives you full access to ios/ and android/ directories while still using Expo SDK and EAS. We start in Managed and eject to Bare only when a third-party SDK requires native project modifications that Expo's config plugins cannot handle.

Yes. The Expo SDK includes over 50 modules covering camera, location, notifications, sensors, payments, biometrics, and more. For APIs not in the SDK, we write custom Expo Modules in Swift and Kotlin - they integrate cleanly and benefit from the same JS interface conventions.

EAS Build runs iOS and Android builds on Expo's infrastructure - no macOS required for Android, and iOS can be built on a Mac runner without Xcode installed locally. It manages code signing automatically, generates versioned .ipa and .aab artifacts, and integrates with GitHub Actions for CI. This removes the most common source of "works on my machine" build failures.

EAS Update allows you to push new JavaScript bundles and static assets to users without a full App Store release. When the app launches or resumes, it checks for a new update bundle on the EAS CDN. Updates go live within minutes. Only JavaScript changes are deliverable this way - native code changes still require a store build and review.

Yes. Expo Router v3+ is production-ready and used by apps with millions of users. It provides file-system based routing (similar to Next.js), typed routes, stack and tab navigation, deep linking, and universal links - all configured in one place. We use it as our default navigation solution for all new Expo projects.

We write a custom Expo Module using Expo's Modules API - a Swift/Kotlin native implementation with a clean TypeScript interface. These modules work in both Managed and Bare Workflow (via config plugins in Managed) and are published as local packages inside the monorepo. For paid third-party SDKs, we write the integration wrapper ourselves.

We configure multiple EAS Build profiles (development, preview, production) each with distinct bundle IDs, API endpoints, and feature flags. EAS Update channels map to these environments so a QA engineer can test a preview update without affecting production users. App variants are configured in app.config.ts using environment variables injected at build time.

Yes. EAS Submit automates submission to App Store Connect and Google Play using the artifacts produced by EAS Build. It handles API key authentication, build number increments, and release notes. We combine EAS Submit with GitHub Actions to create a one-command deploy-to-stores workflow.

Yes. We configure enterprise distribution for internal apps using Apple Business Manager or Google Managed Play. For SSO, we integrate OIDC providers (Okta, Azure AD) via expo-auth-session or custom native modules. MDM-managed apps with device-level policies are handled using Bare Workflow for full native control.

Expo releases major SDK versions every few months. We include SDK upgrade work in our maintenance retainers and follow the official migration guide. Upgrades typically take 1-3 days, are done on a branch, and pass through the full test suite before merging. Staying current avoids compounding debt across multiple major versions.

Expo projects are typically 15-25% cheaper than bare React Native projects of equal feature scope because EAS Build, EAS Update, and the SDK eliminate significant DevOps and native module setup work. An Expo MVP typically ranges from $18,000-$40,000, with full apps ranging from $45,000-$110,000.