Choosing a technology is one of the first decisions in an iPhone project, and it is often confused. Swift, SwiftUI and Flutter are not three competing options of the same kind. Understanding what each one is makes the decision much easier.

What Each One Actually Is

Swift is Apple’s programming language for iOS, iPadOS, macOS, watchOS and visionOS.

SwiftUI is Apple’s modern framework for building user interfaces, written in Swift. Its older counterpart is UIKit.

Flutter is Google’s cross-platform framework, written in Dart, that builds iOS and Android apps from one codebase.

So the real comparison is between a native iOS approach (Swift with SwiftUI or UIKit) and a cross-platform approach (Flutter).

Swift with SwiftUI

SwiftUI lets developers describe interfaces in a declarative way, and it works across Apple platforms.…