Real iOS apps built with AI and the CFA Toolkit: SwiftUI, SwiftData, Swift Concurrency and on-device AI, with public source code and honest licence notes.

A step-by-step guide to building a maintainable iOS app with AI and the free CFA Toolkit, then shipping it through TestFlight and App Store Connect.

Swift 6.2's @concurrent explained: why nonisolated async functions now run on the caller's actor, when to use @concurrent, and how to migrate safely.

The free, open-source CFA Toolkit gives AI coding assistants eight skills, an Xcode template and a dashboard for building and maintaining iOS apps.

3 Days of Swift Concurrency is growing beyond a course: iOS App Development with CFA brings tutorials, open-source apps, architecture and AI skills together.

Worried you're falling behind as an iOS developer? Build one modern app with AI, learn Swift Concurrency by making it work, tidy the code, and ship it.

Task.checkCancellation vs Task.isCancelled in Swift: when to throw CancellationError, when to return quietly, where to put the checks, and which tasks inherit cancellation.

How withTaskCancellationHandler works in Swift: when onCancel runs, why it can't touch actor state, and safe patterns for continuations and callbacks.

Test async/await code in Swift 6 without flaky sleeps: async tests, #expect with await, confirmation, cancellation and gated test doubles from real apps.

Turn repeating callbacks into a for await loop with AsyncStream. Learn yield, finish, onTermination, buffering and a real Swift 6 actor example.

Wrap a completion handler in withCheckedContinuation and resume exactly once. Learn throwing, delegate and cancellable continuations with Swift 6 code.