Do you have more experience working with SwiftUI or UIKit?

This question is aimed at assessing your experience, so the answer depends on your actual experience. In general:

• UIKit is the traditional framework for building interfaces in iOS, based on an imperative approach and using UIView.
• SwiftUI is a more modern declarative framework that allows describing UI in the form of declarations and automatically updates the interface when data changes.

If you have more experience with UIKit, you can say that you are familiar with its architecture, the lifecycle of controllers, and traditional ways of building interfaces. If with SwiftUI — that you can create interfaces declaratively, work with states, and reactive patterns.

Example answer:

"I have more experience with SwiftUI, as my recent projects were focused on rapid prototyping and using modern UI approaches. However, I am also familiar with UIKit and can work with it if necessary."