Maybe you’ve heard of or worked with React, the JavaScript framework developed by Facebook. The social media company took it even further by releasing React Native, which quickly became the most popular framework for building mobile apps with JavaScript. Many companies embraced the idea and started building their apps with it.
In this article, we’ll get an idea of how to develop an application for Android and iOS using Expo and Firebase, based on my own experience of creating an application with these technologies.
https://www.smashingmagazine.com/2020/05/mobile-app-expo-react-native-firebase-ios-android/