Use the CFA AI Toolkit for iOS when starting a new Xcode project, building on Swift Concurrency, or upgrading a GCD app into CFA. Free skills, templates and an inspector for AI coding tools.

AI tools and new hires both copy the patterns they find. Why a shared, predictable iOS layout like CFA helps them, and why Frankenstein Architecture confuses them.

Progress update, 1 November 2026: the 3DaysOfSwiftConcurrency.com site is live, CFA AI Toolkit for iOS v0.3.3 shipped, and the soft launch is targeted for 1 December 2026.

What separates senior from mid-level iOS developers: ownership, architecture, Swift Concurrency correctness, reviewing AI code and mentoring, with a practice plan.

Swift 6 makes isolation an architecture decision. Why silencing warnings leads to Frankenstein Architecture, and how a shared architecture like CFA fixes it.

Enable complete concurrency checking in Xcode or Package.swift, switch targets to Swift 6 mode, and optionally use default MainActor isolation. Tested.

The best iOS app architecture is a shared one any developer or AI can read. Why apps diverge, what it costs teams, and why Swift 6 is the moment.

AI coding tools drift without clear boundaries. See how CFA and the free CFA AI Toolkit for iOS give Codex and Claude Code one obvious home for every file.

Cooperative Feature Architecture (CFA) puts KISS first. See what it really says, how its Xcode folders work, and how it differs from TCA and Clean Architecture.

Strict concurrency checking is Swift's compile-time data-race checker. See Minimal, Targeted, Complete and Swift 6 mode compared on the same code.

No deadline for Swift 6 language mode, but since 28 April 2026 App Store uploads need Xcode 26 (Swift 6.2). Here's what's required and what's optional.

Big bang, file by file or feature slices? A behaviour-first, slice-by-slice Swift 6 migration strategy with leaf modules first and tested CFA examples.

Xcode 26's Swift 6.2 compiler still builds Swift 5 mode. Learn what Swift 6 mode changes, which upcoming features it enables, and how to switch per target.

Migrate to Swift 6 feature by feature: record behaviour, enable complete checking, wrap callbacks, move state to owners, then switch targets. Tested code.

A 15-step curriculum for existing iOS developers: understand threads, memory, tasks and architecture, then design better features with Swift Concurrency and AI.

A dated snapshot of 3DaysOfSwiftConcurrency.com as of 17 October 2026: who it is for, how it works, what is free, what is planned and what changed.

Build an iOS app with Cursor AI the structured way: add the free CFA AI Toolkit skills, prompt Using CFA, and grow your SwiftUI app one feature at a time.

Codex iOS app development works better with a blueprint. Install the free CFA AI Toolkit plugin for Codex, check it works, and start your app Using CFA.