Both React Native and Flutter are top contenders for cross-platform mobile app development, but the choice depends on various factors such as performance, ease of use, and community support. React Native, backed by Facebook, uses JavaScript and has a vast ecosystem of libraries, making it highly versatile and developer-friendly. It also provides a more native-like experience. On the other hand, Flutter, developed by Google, uses Dart and offers excellent performance with its single codebase compiling to native ARM code. It allows for rich, customizable UIs thanks to its widget-based system. Choosing between the two in 2024 comes down to the specifics of your project, the team's familiarity with each framework, and the need for native performance or customizable UIs.