Developers face several challenges with cross-platform applications, primarily in achieving consistent performance and user experience across different operating systems. Variations in device capabilities, screen sizes, and system resources can complicate development efforts. Moreover, keeping the application up-to-date across platforms requires continuous maintenance and rigorous testing to eliminate bugs. Another issue is ensuring security while also accommodating the unique specifications of each platform. Lastly, balancing feature sets to avoid performance lags while providing robust functionality can pose significant hurdles, making this development pathway challenging.