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Comprehensive iOS development guidance including Swift best practices, SwiftUI patterns, UI/UX review against HIG, and app planning. Use for iOS code review, best practices, accessibility audits, or planning new iOS apps.
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Based on SOC occupation classification
TDD and testing skills for iOS/macOS apps. Covers characterization tests, TDD workflows, test contracts, snapshot tests, test infrastructure, and deterministic quality gates (fitness functions, coverage ratchet, mutation testing). Use for test-driven development, adding tests to existing code, or building test infrastructure.
Set up SwiftUI visual regression testing with swift-snapshot-testing. Generates snapshot test boilerplate and CI configuration. Use for UI regression prevention.
Gate test coverage with a ratchet — a committed baseline that coverage may never drop below and only ever rises. Ships a coverage-gate script (xccov-based) plus an advisory CRAP report (complexity × uncovered). Use when agent-written code needs a deterministic "tests were actually written" check.
Enforce complexity and size limits on Swift code with SwiftLint threshold rules — cyclomatic complexity, function/type/file length, parameter count — adopted via a violations baseline so existing code never blocks. Use when agent-written code needs deterministic size constraints.
Swift language patterns and best practices including concurrency, performance, and modern idioms. Use for Swift language-level code review or architecture guidance.
Write architecture fitness functions — deterministic tests that enforce a project's hard rules (module boundaries, offline guarantees, content contracts) from inside its own test target. Use when a constraint lives only in prose (CLAUDE.md, code review) and should become un-arguable.
| name | ios-development |
| description | Comprehensive iOS development guidance including Swift best practices, SwiftUI patterns, UI/UX review against HIG, and app planning. Use for iOS code review, best practices, accessibility audits, or planning new iOS apps. |
| allowed-tools | ["Read","Glob","Grep","WebFetch"] |
| last_verified | "2026-07-16T00:00:00.000Z" |
| review_by | "2027-06-22T00:00:00.000Z" |
| os_version | iOS 27 / macOS 27 |
Comprehensive guidance for iOS app development. This skill aggregates specialized modules for different aspects of iOS development.
Use this skill when the user:
Read relevant module files based on the user's needs:
Swift code quality and modern idioms for iOS.
UI/UX review against Apple HIG.
Structured accessibility audit workflow (advisory).
performAccessibilityAudit) + CI patternsSwiftUI navigation architecture patterns.
iOS app planning and analysis.
Build, install, launch, and screenshot the app in the Simulator to verify a change visually (operational — uses Bash, not just guidance).
.app + bundle idRun an app on a physical iPhone/iPad from the CLI (no Xcode GUI).
xcodebuild -allowProvisioningUpdatesdevicectllibimobiledeviceUser asks for UI review:
ui-review/SKILL.md for the full review process