The primary value of using cross-platform development tools lies in their ability to enable developers to write code once and deploy it across multiple platforms, such as iOS and Android. This approach minimizes the need for platform-specific adaptations, thereby saving time and resources. Furthermore, it allows for a more consistent user experience across different devices since the same codebase is used. By reducing the overall development effort, cross-platform tools can facilitate faster time-to-market for applications while maintaining quality and performance.