How do you write SwiftData predicates to query for parent relationships.

Master Swift’s Measurement API for safe unit conversion, precise formatting, and custom unit support—perfect for building internationalized, user-friendly iOS apps

Learn how to implement MCP client with SwiftUI and Anthropic API

“Production only” crashes in iOS apps are notoriously difficult to debug. Traditional in-process crash reporting tools install handlers within your app to capture failure data, but if the app crashes hard enough, these reporters themselves may fail.

Once you start using Swift Concurrency, actors will essentially become your standard choice for protecting mutable state. However, introducing actors also tends to introduce more concurrency than you…

SwiftUI offers several approaches to building lists of content. You can use a if your list consists of a bunch of elements that should be placed on top of each other. Or you can use a if your list is…

Task local values is the recent addition to the concurrency feature of the Swift language. This week, we will not only learn the basics of task local values, but also discuss the interesting usage where we will build the dependency injection container using…

Raw identifiers, backtraces, task naming, and more.

Enforce architecture and best practices in your iOS apps as unit tests, with a modern, open-source linter for Swift.

Swift error messages can be cryptic, but as a community, we can make them clearer. Help others (and your future self) by contributing better explanations.

Explore how LLMs are changing the way we code and the exciting opportunities ahead as Apple brings 'vibe coding' to the Xcode ecosystem for Swift developers.

Today’s example shows a static property providing the current date.
Perfect mechanism when we don’t want to inject it everywhere where it’s used.
How to test it? Check it out ⤵️
Initial setup
let currentDateFormatter: DateFormatter = {
let formatter =…

A deep dive into using PiP mode.

I’m very passionate about my health routine and have built a bunch of health-related apps. Almost all of them are integrated with Apple Health and provide tons of additional calculations over the functionality that the Apple Health app gives us. Today, we…

Learn how to further customize intents for your SwiftUI apps with parameters and dialogs.

Explore ways to create and customize mesh gradients in SwiftUI, including color adjustments, finer control with Bezier points, and color position animations to add variety and emphasis to your design.

Manual QA is slow, clumsy and error-prone. When you click through every flow in your app by hand, you lose precious time—and you still might wake up at 3 AM wondering if you forgot to ... <a title="Getting Started with Unit Testing for iOS Development" class="read…

If you’ve ever shipped a bug where a button did nothing, a sheet didn’t show, or the wrong item appeared on screen—this post is for you. Most iOS app bugs happen in the UI layer. ... <a title="XCUITest: How to Write UI Tests for SwiftUI Apps" class="read…

Writing tests sounds boring until your app breaks and you have no idea why. In this post, we’ll walk through how to write simple, focused unit tests for a SwiftUI app using Apple’s built-in framework: ... <a title="Introduction to XCTest: How to Write Unit…

As we started getting closer to the release of Swift 6.0, I had this bright idea. I decided to write about every evolution proposal related to concurrency that would ship with that release. This resulted in 12 posts and let me tell you, it was a lot of work.…