Hiring a CoreAnimation developer is essential for creating visually appealing and interactive iOS applications. They possess vital skills in utilizing Apple's native framework, CoreAnimation, to create smooth, efficient, and engaging animations that enhance user experience. Their expertise can increase your app’s aesthetic appeal and functionality, making it more attractive to users. Furthermore, they can optimize your app's performance by reducing its demand on device resources. Therefore, their contribution can significantly boost user satisfaction, engagement, and ultimately, the success of your application.