Expo

Expo is a wildly explosive, fiercely beloved, and technologically brilliant platform that operates as the ultimate "Supercharger for React Native." While raw React Native is incredibly powerful, it is notoriously agonizing to configure (dealing with XCode, Gradle, and native build errors). Expo built a massive empire by mathematically abstracting away all the terrifying native OS complexity. The absolute core superpower of Expo is its "Managed Workflow and EAS (Expo Application Services)." A Javascript developer can literally build, test, and deploy a full iOS and Android app to the App Stores without ever installing Apple XCode or Android Studio on their laptop. Expo's massive cloud servers handle all the terrifying native compilation mathematically in the background. Because it completely eliminated the horrific dev-ops configuration nightmare of mobile engineering, offering staggering development velocity and instant over-the-air updates, it is the absolute go-to for modern Silicon Valley startups and agile React teams.