Setting up Expo Application Services (EAS) and Over-The-Air (OTA) updates for the first time feels like unlocking a developer superpower. The promise is incredible: ship bug fixes directly to your users' phones instantly, completely bypassing the App Store review process.
But if you set it up incorrectly, that superpower quickly turns into a nightmare of instant crashes, poisoned update channels, and the dreaded White Screen of Death (WSOD).
I recently navigated this minefield while building a production React Native app using Supabase and RevenueCat. I learned the hard way that the gap between local development and cloud builds is filled with hidden traps.
If you are setting up EAS and expo-updates from scratch, this step-by-step guide will ensure you get it right on the very first try.
Step 1: Master Your Environment Variables
