Many legacy systems and existing apps are built in Java, making a complete transition to Flutter neither practical nor cost-effective. That said, Flutter is rapidly growing in popularity thanks to its fast development cycles, expressive UI capabilities, and the ability to deploy from a single codebase across Android, iOS, and even web. At Jasper https://www.pissedconsumer.com/company/jasper/customer-service.html , for example, we've seen teams begin to integrate Flutter for new feature development or when targeting multiple platforms from the outset especially when a polished and consistent user experience is a top priority.