Turn your iPhone, iPad or Mac into a powerful Swift development environment.
App Designer lets you write, run, preview, organize, and debug Swift code directly on your device — completely offline and without Xcode. Build SwiftUI, UIKit, and RealityKit projects with live code execution, a built-in canvas preview, professional editing tools, Xcode project import/export, and an integrated AI assistant that can work offline or with your own online provider.
Write Swift Anywhere
Run Swift code instantly and see real-time output while you build. Preview SwiftUI and UIKit interfaces side by side with your code and bring your ideas to life directly on your device.
Professional Code Editor
Enjoy syntax highlighting with 89 color themes, smart autocomplete for Swift, SwiftUI, and UIKit, adjustable font size, line wrap, bracket matching, and automatic bracket insertion.…
From the developer’s store description.