Cross-platform mobile application development offers a solution to the challenge of maintaining separate teams for Android and iOS, with React Native and Kotlin Multiplatform being two prominent frameworks in this field. React Native, created by Facebook, utilizes JavaScript and offers features like hot reloading, a mature ecosystem, and the ability to create near-native performance apps, though it may require native code for certain functionalities. Kotlin Multiplatform, developed by JetBrains, allows developers to use a single codebase for both iOS and Android, providing native performance and seamless integration with native UI elements, but it is relatively new and requires familiarity with multiple tech stacks. The choice between these frameworks depends on specific app requirements, such as the need for rapid development and hot reload features, versus the necessity for native performance and extensive use of native components.