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iOS and macOS development told line by line. Filter by topic or explore the full series.

69 articles

App StoreApp Store Connect New

App Store Connect, part 2: screenshots in 2026 and what iPhone Duo requires

Which screenshot sizes are required today, the iPhone Duo sizes and the April 2027 deadline, App Review's guidance on what your screenshots must show, and a checklist to get your page ready before October 23.

App StoreApp Store Connect

App Store Connect, part 1: creative assets and the Asset Library

Agent Skills, part 2: what to install depending on the kind of app

Agent Skills, part 1: the essential set I keep installed for Apple development

Agent Skills, part 0: what they are and why they matter if you build for Apple platforms

iOS 27iPhone Duo

iPhone Duo with Xcode 27.1: the 6 foldable APIs that shipped on September 18

Xcode 27 Agent Skills in your favorite editor: one command puts Apple's 10 skills in Claude, Cursor, or Codex

Goodbye Simulator.app, hello Device Hub: the new device workshop in Xcode 27

iOS 27 for your next app: what's worth adopting (and what's on its way out)

macOS CI/CD with Fastlane (part 5): GitHub Releases distribution

macOS CI/CD with Fastlane (part 4): auto-versioning and QA vs Release lanes

macOS CI/CD with Fastlane (part 3): notarization in depth

macOS CI/CD with Fastlane (part 2): setup, certificates and credentials

Apple 'Surprise and Shine' Event: iPhone Duo, iPhone 18 Pro and what it means for devs

macOS CI/CD with Fastlane (part 1): distribution outside the App Store

Pokédex in TCA (part 6): testing and a technical contrast with MVVM

Pokédex in TCA (part 5): debounced search and type filters

Pokédex in TCA (part 4): favorites with @Shared

Pokédex in TCA (part 3): the detail and navigation as state

Pokédex in TCA (part 2): remote state, pagination and visible errors

Pokédex in TCA (part 1): project setup and feature architecture

iOS security (part 5): AI-assisted coding without leaking data

iOS security (part 4): logs and sensitive data leaks

iOS security (part 3): secrets and API keys in the binary

iOS security (part 2): encrypting files at rest

iOS security (part 1): where to store tokens and secrets

TCA from scratch (part 4): testing in depth and an honest comparison

TCA from scratch (part 3): shared state and persistence

TCA from scratch (part 2): composition and state-driven navigation

TCA from scratch (part 1): building a search feature with the 2026 API

SwiftConcurrency

Concurrency that no longer bites: Swift's new defaults (6.2 → 6.4)

SwiftConcurrency

Modern concurrency in Swift: async/await, Task, actors and Sendable

SwiftConcurrency

Structured concurrency in practice: async let, TaskGroup, cancellation and actors

Skyllector is on the App Store

WWDC 2026 for devs (part 4): visionOS, Siri's shift, and the rest of the ecosystem

Narcisse 1.2.0 is out

WWDC 2026 for devs (part 3): Xcode Agent Skills and the official SwiftUI APIs

WWDC 2026 for devs (part 2): AI in apps, agents, and more SwiftUI

WWDC 2026 for developers: what we know so far

Building a Pokédex on iOS — Part 10: CI/CD with GitHub Actions

Building a Pokédex on iOS — Part 9: Unit testing with Swift Testing

Building a Pokédex on iOS — Part 8: ViewModel with @Observable

Building a Pokédex on iOS — Part 7: Image cache

Building a Pokédex on iOS — Part 6: Offline persistence with SwiftData

SwiftArquitectura

Building a Pokédex on iOS — Part 5: Domain models and Use Cases

SwiftArquitectura

Building a Pokédex on iOS — Part 4: Repository Pattern

Building a Pokédex on iOS — Part 3: DTOs and the API contract

SwiftNetworking

Building a Pokédex on iOS — Part 2: Network layer

Building a Pokédex on iOS — Part 1: Project structure

Conditional compilation in Swift

Generics in Swift

@propertyWrapper in Swift: beyond UserDefaults

Feature flags with UserDefaults on macOS

Narcisse is now live

AlgoViewer is now available

FigureDex: Your Amiibo Collection, Finally Organized

SwiftThe Basics

Basic operators

SwiftThe Basics

struct — value type

SwiftThe Basics

if / else if / else

SwiftThe Basics

Basic function declaration

SwiftThe Basics

What is an Optional?

What is a Swift Playground?

SwiftThe Basics

What are variables and constants?

How to expose an HTML interface in a macOS app

Modeling API responses with enums in Swift: an elegant solution for unpredictable APIs

Announcing the new version of Game Progress

Starting a project in Xcode

What's new at WWDC 2021 | Part 1

What's new at WWDC 2021 | Part 2

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