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iOS Simulator Skill

Build, test and drive iOS apps in the Simulator with 31 token-efficient scripts that navigate by accessibility label instead of pixel coordinates.

Dev & CodingIntermediate★ 1,315⑂ 103AI score 9/10Last updated: Nov 8, 2026

What it does

  • Builds and tests Xcode projects via build_and_test.py, parsing errors and warnings with progressive disclosure; --run builds, installs and launches in one call.
  • Navigates the UI through the accessibility tree: screen_mapper.py lists elements for ~10–50 tokens, navigator.py --find-text "Login" --tap interacts semantically (screenshots cost 1,600–6,300 tokens).
  • Controls device state: gestures (swipe, scroll, pinch, drag, shake, rotate), keyboard and hardware buttons, deep links, push notifications, clipboard, photo library, 13 permission services, GPS/GPX location, dark mode, Dynamic Type, contrast and locale.
  • Analysis tooling: WCAG accessibility audit, screenshot visual diff, markdown test recordings, full app state snapshots, sandbox/UserDefaults/Core Data inspection, and .xcstrings localization gap auditing.
  • hang_watcher.py (HangBuster) records os_log hang events into sessions, emits an ~100-token L1 summary, then drills into clusters or raw gzipped ndjson for jq exploration, with cross-session diffing.
  • Full simulator lifecycle: create, boot, shutdown, erase, delete, plus sim_list.py which cuts simctl list output by 96%.

Who it's for

  • iOS/Swift developers who want Claude Code to handle builds and UI test flows
  • QA and accessibility engineers checking labels, touch targets and WCAG compliance
  • Teams chasing main-thread hangs, scroll jank, or missing localized strings
  • Prerequisites: macOS 15+, Xcode 26+ (full app), Apple silicon, Python 3.12+, brew install facebook/fb/idb

Example uses

  1. "Build this project, launch it on a simulator and sign in" → sim_health_check.sh → build_and_test.py --run → screen_mapper.py → navigator.py --find-text "Login" --tap → --find-type TextField --enter-text ...
  2. "Audit this screen for accessibility problems" → accessibility_audit.py for missing labels and small touch targets, plus appearance.py --text-size AX5 --contrast high to check large-text layout
  3. "Find out why scrolling stutters" → hang_watcher.py --start, interact, --stop for the summary, --get-details --cluster 1 to drill in
  4. "Test the app with camera permission denied" → privacy_manager.py --revoke camera then app_launcher.py --restart

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/conorluddy/ios-simulator-skill/HEAD/ios-simulator-skill/skills/ios-simulator-skill/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on AI Skill Mart.
Copy the ios-simulator-skill/skills/ios-simulator-skill folder from the GitHub repo conorluddy/ios-simulator-skill into my ~/.claude/skills/ios-simulator-skill/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/conorluddy/ios-simulator-skill.git /tmp/ios-simulator-skill && mkdir -p ~/.claude/skills && cp -r /tmp/ios-simulator-skill/skills/ios-simulator-skill ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Confirm prerequisites: macOS 15+, Xcode 26+ (the full app, not just Command Line Tools), an Apple silicon Mac, and python3 --version ≥ 3.12.
  2. Install idb: brew install facebook/fb/idb (this installs both idb-cli and idb-companion).
  3. For visual diffs, also install Pillow: pip3 install pillow
  4. Clone the repo: git clone https://github.com/conorluddy/ios-simulator-skill.git /tmp/ios-simulator-skill
  5. Copy the skill into Claude's skills folder: mkdir -p ~/.claude/skills && cp -r /tmp/ios-simulator-skill/skills/ios-simulator-skill ~/.claude/skills/
  6. Verify the environment: bash ~/.claude/skills/ios-simulator-skill/scripts/sim_health_check.sh
  7. Restart Claude Code and ask something like "launch my app on the iOS simulator" to trigger the skill.
  8. If taps and typing silently do nothing, refresh the companion: brew upgrade facebook/fb/idb-cli facebook/fb/idb-companion && idb kill.
View source on GitHub ↗License: MIT