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A macOS app that locally reviews your agent's Swift and SwiftUI code and provides guidance to fix issues.

ArrangementView lets SwiftUI place two related views side by side, stacked or layered depending on the available space and the fold on iPhone Duo, with split and overlay styles to configure the result...

Build interfaces that adapt to any window size, device, and text size by sizing views flexibly, structuring scrolling content correctly, and choosing the right SwiftUI layout API for each job.

Customize the appearance of the macOS window toolbar in SwiftUI using scene and view modifiers to control its layout, title visibility, and background.

Review automatic SwiftUI sheet adaptations on iPhone Duo and configure sheet placement and toolbar arrangement to suit the content being presented.

Use SwiftUI transaction values to identify updates made by wrapped UITextView and NSTextView editors, preventing the same values from being applied again when SwiftUI sends them back.

Review automatic SwiftUI sheet adaptations on iPhone Duo and configure sheet placement and toolbar arrangement to suit the content being presented.

A macOS app that locally reviews your agent's Swift and SwiftUI code and provides guidance to fix issues.

The Month iPhone Duo Gives Developers

We've released SwiftFairy, our new Mac app that helps coding agents review Swift and SwiftUI code. This month also took us to Wales for iOSDevUK, where Matt presented on interactive Swift Charts and I...

Explore alternatives to rectangular heatmap cells for visualising spatial data along coastlines and irregular boundaries.

Install SwiftFairy, activate Scroll access, connect a coding agent, and review Swift and Apple API usage.

SwiftFairy brings our Swift and SwiftUI expertise to your coding agent, running static analysis on your Mac over MCP and returning targeted guidance for each flagged issue.

Control how SwiftUI presents toolbar items and tabs on iPhone Duo with the new iOS 27.1 APIs, from arranging custom labels to prioritizing actions when space is limited.

A macOS app that locally reviews your agent's Swift and SwiftUI code and provides guidance to fix issues.

A macOS app that locally reviews your agent's Swift and SwiftUI code and provides guidance to fix issues.

Use the AttributedString API to build a reusable Text initializer that applies a distinct font to the unit component of a formatted measurement.

Build SwiftUI views that update periodically or continuously, without relying on explicit state changes, to create dynamic interfaces and visual effects.

'The SwiftUI Way' has been updated with expanded guidance on SwiftUI data flow, view updates, and performance, including changes introduced in Xcode 27.

Reorder items within and between custom SwiftUI containers, and build selection-aware multi-item drag and drop interactions with the new APIs in iOS 27.

Control how SwiftUI presents toolbar items and tabs on iPhone Duo with the new iOS 27.1 APIs, from arranging custom labels to prioritizing actions when space is limited.

Learn how to enable SwiftUI's ForEach slow-path diagnostic in Xcode, interpret warnings about variable view counts, and address the reported patterns in List and lazy stacks.

Swift Charts can build a proper sunburst diagram, but the fun is in the details: `SectorMark` rings, radius ratios, angular insets, grouped data layout, and accessibility labels that don’t get treated as an afterthought. The result is a multi-level donut chart where the outer rings still line up with their parent categories, which sounds simple until you try to fake it by hand. Who doesn’t like a chart that looks custom without becoming a pile of custom drawing code? This is a good reminder that Charts has more range than the usual bar-and-line dashboard screenshots suggest.

Control which SwiftUI toolbar actions stay visible, move commands into overflow, pin an important item and configure navigation bar minimization with the new iOS 27 APIs.

Learn how alignment guides position views in SwiftUI, how to override a built-in guide, and how to define a custom alignment for views in nested containers.

Present grouped data as a multi-level donut chart, where each outer ring reveals a more detailed breakdown and each subgroup aligns with its parent category.

Build an interactive bar chart in Swift Charts that displays detailed annotations when the user is hovering over bar marks.

Present grouped data as a multi-level donut chart, where each outer ring reveals a more detailed breakdown and each subgroup aligns with its parent category.

Present grouped data as a multi-level donut chart, where each outer ring reveals a more detailed breakdown and each subgroup aligns with its parent category.

Present grouped data as a multi-level donut chart, where each outer ring reveals a more detailed breakdown and each subgroup aligns with its parent category.

Learn how to use matchedGeometryEffect() in SwiftUI to animate a capsule background that highlights the selected option in a custom segmented control.

A calendar heat map looks simple until dates from later weeks form a staircase and VoiceOver groups every Monday into one inaccessible column. Normalizing weekdays into a reference week fixes the geometry; replacing the plot’s accessibility children with a matching synthetic grid restores day-by-day navigation and month headings without throwing away Swift Charts’ date-based model.

Aberystwyth • 7th-10th September 2026

Create a chart with the Swift Charts framework to show UV index throughout the day inspired by the iOS Weather app that dims the area up to the current time.

Compare the effects of stored inputs, state, bindings, environment values and observable models on SwiftUI view updates through input comparison, access tracking and subscription behavior.