Individual skill
swift-ios
Use when building native iOS and Apple-platform apps in Swift with SwiftUI and modern Swift concurrency — observable view models, Swift 6 strict data-race diagnostics, async/await and actors, SwiftData persistence, NavigationStack, and Swift Testing. NOT cross-platform Dart (that is `flutter`), NOT React Native (that is `react-native`), NOT native Kotlin for Android (that is `kotlin-android`), NOT shared KMP code across both OSes (that is `compose-multiplatform`).
skills/swift-ios/SKILL.md
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- Last checked
- Nov 6, 2026
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- 568
- Repository last updated
- Nov 4, 2026
- License
- MIT
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- swift Declared skill tag
- swiftui Declared skill tag
- ios Declared skill tag
- swift-concurrency Declared skill tag
- swiftdata Declared skill tag
- swift-testing Declared skill tag
- apple Declared skill tag
- data Derived category
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SKILL.mdcore · 11,876 bytesSKILL.mdcore · 11,876 bytesSKILL.mdcore · 11,876 bytesSKILL.mdcore · 11,876 bytesSKILL.mdcore · 11,876 bytesevals/README.mddoc · 747 bytesevals/cases.yamlasset · 3,111 bytesreferences/concurrency.mddoc · 5,287 bytesreferences/testing.mddoc · 3,990 bytesscripts/verify.shruns · 3,621 bytes
Read excerpt
# swift-ios
**Hand-off — the language vs the platform.** This skill owns the **platform**: SwiftUI/UIKit views,
app lifecycle, Xcode, iOS APIs, App Store shipping. Language-level Swift — Swift 6 data-race safety
and approachable concurrency, actors and task groups, `some` vs `any`, ARC and performance, Swift
Testing, macros — is this skill's own ground. A concurrency error, a hang, a data race or a
retain cycle belongs here, and so do interface feel, springs and materials on iOS.
Native Apple-platform apps: the code is `.swift`, the UI is SwiftUI, and the compiler enforces actor isolation. If the answer is a `@MainActor`, `@Observable`, `async let`, `#expect`, `NavigationStack`, or `@Model`, you are in the right place.
## First move: match the project before you write a line
Mismatched language modes produce diagnostics you cannot reproduce and "fixes" that break the user's build. Pin the ground truth first.