Swift Review

Swift / iOS Code Review

When to Use

• Reviewing Swift/iOS code (SwiftUI, UIKit, Combine)
• Evaluating iOS architecture (MVVM, TCA, VIPER)
• App Store compliance review
• iOS performance and memory review

Review Checklist

Architecture

• [ ] MVVM or TCA architecture consistently applied
• [ ] View models don't import UIKit/SwiftUI
• [ ] Protocol-oriented design for dependencies
• [ ] Coordinator pattern for navigation (if UIKit)
• [ ] @EnvironmentObject / @StateObject used correctly

Swift Best Practices

• [ ] Value types (struct) preferred over reference types (class)
• [ ] let preferred over var (immutability)
• [ ] Guard clauses for early returns
• [ ] Result for error handling
• [ ] Codable for JSON parsing (not manual parsing)
• [ ] async/await instead of completion handlers (iOS 15+)
• [ ] Property wrappers for common patterns
• [ ] Access control (private, internal, public) enforced

SwiftUI

• [ ] Views are small and composable (< 50 lines body)
• [ ] @State for local, @Binding for parent-child, @ObservedObject for injected
• [ ] No heavy computation in body (use .task {} modifier)
• [ ] Preview providers for all views
• [ ] Accessibility modifiers (.accessibilityLabel, .accessibilityHint)
• [ ] Dark mode support verified

Memory & Performance

• [ ] No retain cycles ([weak self] in closures)
• [ ] Instruments profiled for leaks
• [ ] Images resized to display size (not full resolution)
• [ ] TableView/CollectionView cell reuse
• [ ] Background tasks for heavy work (DispatchQueue.global())
• [ ] Core Data batch operations for large datasets

App Store Guidelines

• [ ] No private APIs used
• [ ] In-App Purchase for digital goods (not external links)
• [ ] Privacy manifest (PrivacyInfo.xcprivacy) included
• [ ] Required device capabilities declared
• [ ] App Transport Security exceptions justified
• [ ] No hardcoded test data in release builds

Output Format

## iOS Review: [Module]
**Health Score**: X/10
### Issues | Improvements | Architecture Notes

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: camilooscargbaptista
• Source: camilooscargbaptista/cto-toolkit
• License: MIT

Install and usage instructions live in the source repository linked above.