The Ultimate Showdown: SwiftUI vs UIKit — Revolutionising iOS App Development

Navdeep Singh
7 min readJul 14

Legacy of iOS app development

This blog provides a brief overview of the importance of choosing the right framework for iOS app development

Evolution of iOS App Development Frameworks

Legacy of UIKit

UIKit has been the go-to framework for developing iOS apps for many years. Its robust features and extensive documentation have made it a popular choice among developers.

UIKit’s strengths and limitations for building mobile apps

  • UIKit provides a wide range of pre-built UI components that allow developers to create visually appealing interfaces.
  • However, UIKit can be complex and requires a deep understanding of its components and APIs. It can be time-consuming to build and maintain large-scale applications with UIKit.

Enter SwiftUI

SwiftUI represents a significant shift in iOS app development, introducing a declarative and intuitive approach to building user interfaces. It simplifies the development process by providing a concise syntax and automated updates to the UI.

Advantages of SwiftUI over UIKit

  • SwiftUI offers improved code reusability, reducing development time and effort.
  • Its live preview feature allows developers to see their changes in real-time, enhancing the development experience.
  • SwiftUI’s declarative nature reduces the chances of introducing bugs, making it easier to maintain and update apps.

Core Concepts

Understanding UIKit

The building blocks of UIKit are views, view controllers, and delegates

  • Views represent the visual elements displayed on the screen.
  • View controllers manage the flow of the app and coordinate interactions between views.
  • Delegates handle user interactions and communication between objects.

Developers using UIKit must manually create and configure each view, resulting in a more verbose and time-consuming development

Navdeep Singh

Author of Reactive programming with Swift, Engineering Manager — Exploring possibilities with new Tech.