Hiring a Kivy developer can be instrumental for cross-platform application development. Kivy is an open source Python library used for creating multi-touch applications. It's extremely adaptable and can run on Android, iOS, Linux, OS X, and Windows. A Kivy developer can leverage the flexibility of the framework to create innovative applications with rich user interfaces. They can help you rapidly prototype your ideas and translate them into high-performing applications, enhancing your product's functionality and user experience. As Kivy supports multi-touch, gestures, and other modern touch features, it can be especially beneficial for developing interactive applications.