[jameside]

Expo supports custom native code including your existing modules. It is a much smaller step to start using Expo if you are already using React Native.

Using Expo without EAS, the paid services, is definitely supported. The Expo framework is free and open source and is designed to be generally decoupled from EAS. "npx expo prebuild:{android,ios}" will generate "android" and "ios" directories that can be built with existing build processes.

Expo: free and open source framework. Includes Expo CLI, Expo Modules, Config Plugins, Expo Router, debugging tools. EAS: hosted paid services. Includes builds, submissions, updates, credentials. Works with any React Native project whether or not it is using Expo.