iOS Development Setup SOP

Version: 1.0.0 Last Updated: 2026-01-11 Status: Active

Note: This is a template. Replace placeholders like {PROJECT_NAME}, {WORKSPACE_NAME}, and {BUNDLE_ID} with your actual project values.

Overview

Purpose

Configure a complete iOS development environment for building and running the mobile app on iOS simulators and physical devices. This guide covers Xcode installation, command line tools, CocoaPods, watchman, and simulator configuration.

When to Use

ALWAYS: Setting up new Mac for iOS development, Xcode installation, CocoaPods issues, simulator configuration, code signing setup SKIP: Android-only development, Windows/Linux environments (iOS requires macOS)

Quick Start

1. •Install Xcode: App Store -> Xcode (15-30 GB download)
2. •Install CLI tools: xcode-select --install
3. •Install Watchman: brew install watchman
4. •Install Node via Volta: curl https://get.volta.sh | bash && volta install node@20
5. •Run on simulator: task run-ios

Process Workflow

Flow Diagram

┌─────────────────┐     ┌─────────────────┐     ┌─────────────────┐
│  Install Xcode  │────>│  Setup CLI      │────>│  Install        │
│  (App Store)    │     │  Tools          │     │  Dependencies   │
└─────────────────┘     └─────────────────┘     └─────────────────┘
                                                        │
                                                        v
┌─────────────────┐     ┌─────────────────┐     ┌─────────────────┐
│  Run on         │<────│  Configure      │<────│  Setup          │
│  Simulator      │     │  Simulator      │     │  Node/Ruby      │
└─────────────────┘     └─────────────────┘     └─────────────────┘

Phase Summary

Phase 1: Install Xcode

From Mac App Store

1. •Open App Store on your Mac
2. •Search for Xcode
3. •Click Get / Install
4. •Wait for installation (15-30 GB download)

Post-Installation

After installation, open Xcode once to:

• •Accept the license agreement
• •Install additional components

# Verify Xcode installation
xcodebuild -version
# Expected: Xcode 15.x or later

Phase 2: Setup Command Line Tools

Install Xcode CLI Tools

xcode-select --install

A dialog will appear. Click Install to proceed.

Verify Installation

xcode-select -p
# Expected: /Applications/Xcode.app/Contents/Developer

Accept License Agreement

sudo xcodebuild -license accept

Phase 3: Install Dependencies

Watchman (Required)

Watchman is required for React Native's Metro bundler to efficiently watch file changes.

brew install watchman

Verify installation:

watchman version

Node.js via Volta (Recommended)

Volta provides automatic version switching for Node.js:

# Install Volta
curl https://get.volta.sh | bash

# Restart terminal, then install Node 20
volta install node@20

# Pin project to Node 20
volta pin node@20

Verify:

node --version  # Should show v20.x.x
volta --version # Should show version info

CocoaPods (Optional)

CocoaPods is managed automatically by Expo, but you can install manually if needed:

sudo gem install cocoapods

Ruby (Usually Pre-installed)

Ruby is required for CocoaPods:

ruby --version  # Should be available on macOS
gem --version   # Should be available

If Ruby issues occur:

brew install ruby

ccache (Recommended for Faster Builds)

ccache dramatically speeds up C/C++ compilation for native iOS builds.

# Install ccache
brew install ccache

# Add to PATH (add to ~/.zshrc)
export PATH="/opt/homebrew/opt/ccache/libexec:$PATH"

# Verify installation
ccache --version
ccache -s  # Show statistics

Important: To use ccache with Xcode, launch Xcode from terminal:

xed ios/{WORKSPACE_NAME}.xcworkspace

Phase 4: Configure iOS Simulator

Open Simulator

From Xcode:

1. •Open Xcode
2. •Go to Xcode > Open Developer Tool > Simulator

From terminal:

open -a Simulator

List Available Simulators

xcrun simctl list devices

Select a Simulator

When running task run-ios, Expo will prompt you to select a simulator. You can also specify directly:

# Run on specific simulator
expo run:ios --device "iPhone 15 Pro"

Install Additional Simulators

1. •Open Xcode
2. •Go to Xcode > Settings > Platforms
3. •Click + to add new iOS versions
4. •Download desired iOS runtime

Phase 5: Verify Installation

Run All Checks

# Check Node version
node --version

# Check Watchman
watchman version

# Check Xcode tools
xcode-select -p

# Check Homebrew
brew --version

# Check Ruby
ruby --version

Test iOS Build

# Ensure environment is set up
task setup-dev

# Run on simulator (SIMULATOR=1 is default in .env.example)
task run-ios

Running on iOS Simulator

Quick Start

# Ensure environment is set up
task setup-dev

# Run on simulator (SIMULATOR=1 is default in .env.example)
task run-ios

SIMULATOR Environment Variable

The SIMULATOR environment variable controls code signing:

Using Local Environment Variables for Simulator

Your .env.local file is created by:

task setup-local-env

To switch targets, edit .env.local:

SIMULATOR=1  # For simulator (default)
SIMULATOR=0  # For physical device

Then rebuild: task run-ios

Running on Physical Device

Requirements

1. •Apple Developer Account (free or paid)
2. •Code Signing Certificate
3. •Provisioning Profile

Setup Code Signing (Automatic)

Recommended for development:

1. •Open ios/{WORKSPACE_NAME}.xcworkspace in Xcode
2. •Select the project in the navigator
3. •Go to Signing & Capabilities tab
4. •Check Automatically manage signing
5. •Select your Team (Apple ID)

Setup Code Signing (Manual)

For production builds, use EAS Build which handles signing automatically:

task eas-build-ios

Run on Device

1. •Connect your iPhone via USB
2. •Trust the computer on your device
3. •Set SIMULATOR=0 in your .env file
4. •Run:
   bash

   task run-ios
   

Xcode Tips

Clear Derived Data

If you encounter strange build issues:

rm -rf ~/Library/Developer/Xcode/DerivedData

Or in Xcode: Xcode > Settings > Locations > Derived Data (click arrow to open in Finder, then delete contents).

Reset Simulator

# Reset all simulators
xcrun simctl shutdown all
xcrun simctl erase all

View Simulator Logs

# In a separate terminal while app is running
xcrun simctl spawn booted log stream --level debug --predicate 'subsystem == "{BUNDLE_ID}"'

Quick Reference

Common Commands

# Run on simulator
task run-ios

# Build native project only (no run)
task build-ios

# Regenerate native project
task generate

# Clean and rebuild
task clean
task generate
task run-ios

# List available simulators
xcrun simctl list devices

# Open simulator
open -a Simulator

# Reset simulator
xcrun simctl erase all

Environment Variables

# For simulator (no code signing)
SIMULATOR=1

# For physical device (requires signing)
SIMULATOR=0

Troubleshooting

Push Notifications (Optional)

Push notifications require:

1. •Apple Developer Program membership ($99/year)
2. •Push notification certificate
3. •Real Firebase credentials

For development without push notifications, the placeholder Firebase credentials work fine.

See /setup-env skill for Firebase setup details.

Related Skills

Note: Skill paths (/skill-name) work after deployment. In the template repo, skills are in domain folders.

End of SOP