React Native has revolutionized mobile app development by making it easier to build Android and iOS apps with one codebase. This step-by-step guide explains how to build a React Native app without Expo using React Native CLI. Before starting, you’ll need the following tools: – Node.js – npm or Yarn – Java Development Kit (JDK) – Android Studio – Xcode for macOS users This guide is helpful for beginners and developers who want more control over native files, packages, and app settings.