If you adopted SwiftData expecting a friendlier Core Data, you have probably already met one of its lifecycle traps: a @ModelActor instance going out of scope and taking your fetched models with it, a routine 0.9 → 1.0 staged migration failing with Cannot use staged migration with an unknown model version, or a CloudKit-synced store…
How to survive Xcode toolchain regressions without losing a week
Xcode 26.4 quietly removed the ability to run app-hosted unit tests against physical iOS 16 devices, and Xcode 27 finally added a Delete Derived Data menu item — which the community correctly read as Apple admitting the IDE corrupts its own caches on a regular basis. Between those two announcements is the entire reality of…
How to structure SwiftUI navigation with NavigationSplitView and a router
You moved your SwiftUI app to a router pattern with a top-level NavigationPath, added a NavigationSplitView for iPad and Mac, and now pushing a view from the router replaces the entire content column instead of stacking inside the sidebar. You reach for .isDetailLink(false) — the old escape hatch — and find it does nothing once…
How to structure an ARKit/SceneKit game
A practical guide to separating game logic, scene management, and entities in an ARKit/SceneKit iOS game using GameplayKit’s entity-component system.
The Blast Door Design Pattern: A Secure Software Architecture
Real-life blast doors keeps fire, explosion, and radiation at bay. Designing blast doors into your system can also make it more secure, more resilient, and serves as a protective barrier from attacks.
How to Combine Apps into a Single Container App
It would be a big blow when Apple rejects your suite of apps, call it “spam” and tell you to move into a container app. If this is happening to you, then this article would be a solution to your predicament.
Clean Architecture with VIPER Sample Project for UIKit
Architecting applications to meet today’s challenges and be ready for tomorrow’s problem is not an easy feat. The principles of clean architecture may be sound, but separating the signal from the noise is tough. Here is a sample VIPER project for iOS that you can tinker to learn about the principles of clean architecture.
How to Implement VIPER Clean Architecture in an iOS App
Compartmentalizing functionalities within an app to improve its maintainability is difficult. More so when you’re not well versed with software architectures and other software engineering principles. What if you can confidently structure your app to be resilient and adaptive to change?
Modeling In-App Purchases Inventory
There are four types of in-app purchases in Apple’s App Store, with their own unique ways to manage it. The challenge is how to isolate the intricacies of these product types from the rest of the application. Otherwise a move from non-consumable in-app purchase to a subscription type would involve a major rewrite. Learn how to manage an app’s inventory of purchases and get the code base resilient to changes in the business side.
Architecting a Scalable Web Application
Writing a web app is one thing. Deploying it on the global Internet for millions of users is another thing. Keeping it secure from prying eyes, competitors, and general baddies is yet another challenge. How can you do all of this in a startup where there are a billion of other things in your head beyond running a site?
Future-Proof Your Data Persistence
The data persistence stack that is an appropriate decision today may not be an optimal solution when your app has grown. You would need to design your app to withstand the test of time and be extensible for as it grows. Read more to learn how.
Which Database to Use for My iOS App?
Choosing a database to use for your iOS app is no simple feat. But what if you have the tools to make an informed decision for your app? What if you can decide for today and design for tomorrow?
Tips for Architecting Dual-platform OS X / iOS Applications
How to share common code between OS X and iOS and architect your app to dance around each platform’s similarities and differences.