Can't access app in simulator since I configured the eas


I’m new to this eas thing and the new way of managing expo app. Yesterday I started to set up the eas channels and builds etc… and today I realized that when I simply start the app and try to test it in the ios simulator and the expo go app it gives me the following error:

I already built the app for production for some testing but I’d still like to be able to simply test the app with ios simulator and expo go.

This is my eas.json file:

  "cli": {
    "appVersionSource": "local"
  "build": {
    "development": {
      "developmentClient": true,
      "distribution": "internal",
      "ios": {
        "simulator": true
    "production": {
      "channel": "production"
  "submit": {
    "production": {}

What am I missing ?

Weird I don’t see this error documented anywhere and don’t find anything online. Any help from the Expo team would be very much appreciated…

Hey @ivonig

Normally you can with

expo start                       # launch expo Go
expo start --dev-client          # launch custom client

expo-dev-client launches what you have on my phone

Here is how I added “side by side” configuration adding Side by Side configuration · flexbox/appjs-one@e7ff0fe · GitHub

Hope it helps!