# ios-dev

Entry point for iOS and SwiftUI tasks. Coordinates pattern guides, correctness checks, and Apple framework references for code reviews and feature development.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 697 installs · ★ 349
- Author: Prisma-Labs-Dev
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/Prisma-Labs-Dev/apple-skills/tree/HEAD/skills/ios-dev/SKILL.md
- Updated: 2026-09-26
- HTML: https://affpapa.org/en/nevibecode/skills/ios-dev

## What it does

The skill coordinates the Apple skills collection. Instead of searching through separate references manually, it tells the agent which guide or framework documentation to pull for state management or navigation. Both SwiftUI and UIKit are treated as first-class tools without enforcing architectures like TCA or MVVM.

It defines clear workflows for reviewing code and building new features. A mandatory correctness checklist catches critical bugs: missing `@MainActor` on `@Observable` classes in Swift 6, `@Binding` misuse, unconstrained `ForEach` identities, and property wrapper conflicts.

Placing `@AppStorage` or `@Query` inside an `@Observable` model requires `@ObservationIgnored`, or the compiler macro will fail. Enforcing this rule early prevents silent runtime state desyncs.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add Prisma-Labs-Dev/apple-skills --skill ios-dev -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/ios-dev/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/ios-dev/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add Prisma-Labs-Dev/apple-skills --skill ios-dev -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/ios-dev/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add Prisma-Labs-Dev/apple-skills --skill ios-dev -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/ios-dev/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install Prisma-Labs-Dev/apple-skills ios-dev
```

2. **Manually: put the files in place**
- File: `.github/skills/ios-dev/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add Prisma-Labs-Dev/apple-skills --skill ios-dev -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/Prisma-Labs-Dev/apple-skills --path skills/ios-dev
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/ios-dev/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add Prisma-Labs-Dev/apple-skills --skill ios-dev -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/Prisma-Labs-Dev/apple-skills/tree/HEAD/skills/ios-dev/SKILL.md

## When to use it
- coordinate relevant Apple framework references and pattern guides
- audit SwiftUI code against a strict correctness checklist
- structure state management before building new views
- resolve Swift 6 concurrency and observation macro conflicts

## Example prompts
- Review this SwiftUI view against the ios-dev correctness checklist
- Plan the data flow and subviews for a new settings screen
- Find the recommended guide and references for SwiftUI navigation and sheets

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: a439c4fcf525d15d.

BEGIN THIRD-PARTY FILE a439c4fcf525d15d
```text
---
name: ios-dev
user-invocable: true
description: "Start here for any iOS or SwiftUI task. Coordinates best-practice guides, correctness checks, and full Apple API references. Use before navigating to other Apple skills — for building, reviewing, refactoring, or debugging iOS apps."
---

# iOS Development

Start here. This skill coordinates the Apple skills collection — it tells you *which* skill to use and *when*, so you get opinionated guidance and full API references together.

## Operating Rules

- SwiftUI and UIKit are both first-class — pick whichever fits the task. UIKit is a valid choice whenever it gives more control or flexibility; when bridging the two, watch state sync, lifecycle, and animation/environment boundaries.
- Do not enforce specific architectures (MVVM, VIPER, MV, TCA, etc.) — encourage separating business logic from views without mandating how
- Hold a high bar for UI craft: apps should feel current-generation — fluid, design-forward, alive. Sweat the tiny details. Custom components, novel interactions, and custom Metal shaders are all in-bounds when they serve the experience; system defaults are a floor, not a ceiling.
- Do not prescribe how that craft is delivered — no house style, no "Apple-approved" gatekeeping, no aesthetic checklists. Design direction is your own judgment call, made per app. The `hig` and `ios-liquid-glass` skills document what the system provides; they are references, not style mandates. **When the task is designing a screen or making it look good, there is no doc to route to** — design from your own taste; grep references only when you need API mechanics or a factual minimum (e.g. hit-target sizes).
- Present performance optimizations as suggestions backed by reasoning, not blanket requirements
- When you need exact API details, grep the framework reference skills — they contain full Apple documentation

## Task Workflows

### Review existing code

1. Read the code and identify which topics apply
2. Run the **Correctness Checklist** below — violations are bugs
3. Use the **Topic Router** to load the relevant guide for each topic
4. For API correctness, grep the matching framework reference skill

### Improve existing code

1. Run the correctness checklist first
2. For performance issues: use `guide-swiftui-performance-audit`
3. For navigation, state, or pattern questions: use Apple's `swiftui-specialist` (shipped with Xcode 27; exported to the user skills dir), then the `swiftui` API reference
4. For API details: grep the matching framework reference skill

### Build a new feature

1. Design data flow first — identify owned vs. injected state
2. For UI patterns and app wiring: use Apple's `swiftui-specialist`, then the `swiftui` API reference
3. For API details: grep the matching framework reference skill
4. Structure views for optimal diffing — extract subviews early
5. Run the correctness checklist before finishing

## Topic Router
```
END THIRD-PARTY FILE a439c4fcf525d15d

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First 2959 of 7235 bytes. © Prisma-Labs-Dev · MIT · https://github.com/Prisma-Labs-Dev/apple-skills/tree/HEAD/skills/ios-dev/SKILL.md

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