Understanding SwiftUI - What is SwiftUI? ๐Ÿง

Understanding SwiftUI - What is SwiftUI? ๐Ÿง

In this concise and no-nonsense article, let's postulate what SwiftUI is and why it is all the hype within the iOS developer community.


2 min read


  • The minimum deployment target version is iOS 13 and above.

  • SwiftUI development is supported by Xcode version 11 and above.

The basics

  • SwiftUI is a UI Design Framework just like its predecessor, the UIKit.

  • It uses the Declarative programming approach as opposed to Imperative programming.

  • In simple words, we inform the framework of what should be done based on a state change and it handles the rest.

  • Whereas in the Imperative approach, we keep track of the state and instruct the framework on how to change the UI.

  • SwiftUI uses struct to create views instead of class.


  • SwiftUI helps developers write simple, clean and less code.

  • It manages the state better than the Imperative approach of UIKit.

  • Supports cross-platform development for iOS/iPadOS, macOS, tvOS and watchOS.

  • It uses Live Previews instead of building the project to view UI changes.

  • There are no auto layout issues as it always generates satisfiable layouts.

  • People working in teams no longer have to suffer merge conflicts in storyboards. ๐Ÿ˜œ

  • It can be used alongside UIKit using UIHostingController.

  • It supports reactive programming using ObjectBinding, BindableObject and the Combine Framework.


  • Users with iOS version 12 and below will not be able to use apps developed with SwiftUI.

  • Team development might take more time as others might not be familiar with SwiftUI.