SwiftUI Accessibility Model

As with Apple’s approach on all platforms, accessibility on iOS is locked down. There is no visibility into the accessibility subsystem and no way for developers to create custom assistive technologies. This provides strong security, since assistive technologies have hugely privileged access, having the ability to access all on-screen content and act on behalf of the user. However, this does mean that for users with specific requirements, it is not possible to build a custom assistive technology tailored to meet their exact needs.