Expo Development
Expo is a managed platform for React Native development. Instead of managing native builds, CocoaPods, Gradle, Expo handles it. You write React/TypeScript, run `expo publish`, and your app reaches iOS + Android from a single codebase. Perfect for MVPs, startups, and teams without native engineers. Senior Expo developers earn $120-160k because they know when to eject to bare React Native and how to scale beyond Expo's limitations. Mastery takes 2-3 weeks. Expo is faster to shipping than React Native bare, but has less control.
Expo Developmentとは
Expo is a managed platform for developing React Native apps without dealing with native build systems (Xcode, Android Studio, CocoaPods, Gradle). You write React/TypeScript, and Expo's build service (EAS Build) generates production APKs and IPAs. Expo Go is a development app that lets you test your app on a physical phone instantly (no build needed). Expo SDK includes 50+ modules: Camera, Notifications, Maps, File system, Payments, etc. These cover 90% of app needs. For the other 10% (specialized hardware, custom native code), you eject to bare React Native.
💰 地域別給与
| 地域 | ジュニア | ミドル | シニア |
|---|---|---|---|
| USA | $70k | $115k | $170k |
| UK | $45k | $73k | $110k |
| EU | $50k | $82k | $125k |
| CANADA | $75k | $125k | $190k |
🎯 Expo Developmentを使う職種
❓ よくある質問
When should I use Expo vs. bare React Native?
Can I use native modules with Expo?
What's the difference between Expo Go and EAS Build?
How long does it take to publish an app to the App Store?
Can I share my Expo app without app stores?
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