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Overview

Expo Application Services (EAS) handles building and submitting your app to the App Store and Google Play. For most apps, EAS is the only deployment workflow you need.

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Prerequisites

  • Expo account (expo.dev)
  • EAS CLI installed: npm install -g eas-cli
  • Apple Developer account (for iOS)
  • Google Play Developer account (for Android)

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Steps

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1. Configure EAS

cd apps/mobile

# Login to Expo
eas login

# Configure EAS for your project
eas build:configure
This creates eas.json: 
{
  "cli": {
    "version": ">= 5.0.0"
  },
  "build": {
    "development": {
      "developmentClient": true,
      "distribution": "internal"
    },
    "preview": {
      "distribution": "internal"
    },
    "production": {}
  },
  "submit": {
    "production": {}
  }
}

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Development Builds (Required for Native SDKs)

Some integrations (RevenueCat, push notifications, background uploads) require a development build and will not work in Expo Go. Create a dev client: 
eas build --platform ios --profile development
eas build --platform android --profile development

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2. Build for iOS

# Development build (with dev client)
eas build --platform ios --profile development

# Production build (for App Store)
eas build --platform ios --profile production

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3. Build for Android

# Development build
eas build --platform android --profile development

# Production build (for Play Store)
eas build --platform android --profile production

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4. Submit to Stores

# Submit iOS build to App Store Connect
eas submit --platform ios

# Submit Android build to Google Play
eas submit --platform android

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Environment Variables

For production builds, configure environment variables in eas.json: 
{
  "build": {
    "production": {
      "env": {
        "EXPO_PUBLIC_API_URL": "https://your-api.railway.app"
      }
    }
  }
}

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Troubleshooting

iOS: Run eas credentials to manage certificates Android: Ensure keystore is properly configured
EAS builds typically take 10-20 minutes. Check build logs for specific steps.
Check that all environment variables are set correctly for production.

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Next Steps

App Store Submission

Submission checklist and required assets

Security Checklist

Final pre-launch review