Cross-platform development tools allow developers to create mobile apps that can run on multiple platforms using a single codebase, saving time and resources. Web apps are apps that run on the web and are stored on remote servers, but they require internet connectivity and have limitations in terms of discoverability. Hybrid cross-platform apps use HTML5, JavaScript, and CSS to wrap and package native components, solving performance issues and increasing user base. Native apps are developed for specific platforms or operating systems, offering better performance but requiring more resources. Native cross-platform tools allow developers to write code once and translate it into native code for multiple platforms, reducing development time and costs. Cross-platform development has its pros, including reusable code, convenience, maintainable code, cost efficiency, and market reach. However, it also has cons, such as performance issues, limited graphics capabilities, single platform app requirements, and delayed updates. The choice of cross-platform development tool depends on the specific needs of the project, and developers should weigh the pros and cons before making a decision.