swiftui-performance

Audit SwiftUI runtime performance and guide Instruments profiling and remediation.

155|22|Updated Feb 24, 2026
One-click install
npx skills add https://github.com/omarshahine/HomeClaw --skill swiftui-performance-omarshahine
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: swiftui-performance
Source: https://github.com/omarshahine/HomeClaw/tree/main/.agents/skills/swiftui-performance
Command: npx skills add https://github.com/omarshahine/HomeClaw --skill swiftui-performance-omarshahine

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps diagnose and resolve performance issues in SwiftUI applications, ensuring smooth rendering, responsive interactions, and efficient resource usage.

Core Features & Use Cases

  • Performance Auditing: Identifies bottlenecks like excessive view updates, layout thrash, and high CPU/memory usage.
  • Profiling Guidance: Guides users on using Instruments to capture and analyze performance traces.
  • Code Smells & Fixes: Provides specific examples of common performance anti-patterns and their solutions.
  • Use Case: Your SwiftUI app is experiencing janky scrolling in a long list. This Skill will help you pinpoint the cause, whether it's unstable view identities, expensive computations in body, or inefficient data handling, and guide you on how to fix it.

Quick Start

Use the swiftui-performance skill to analyze the performance of the provided SwiftUI code snippet.

Frequently Asked Questions about swiftui-performance

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I fix janky scrolling in SwiftUI long lists?

SwiftUI performance auditing identifies excessive view updates, layout thrash, and identity churn as primary causes of janky scrolling. It guides you through root-cause analysis and specific code fixes to restore smooth rendering.

How do I profile SwiftUI rendering issues using Instruments?

Profiling SwiftUI rendering with Instruments involves capturing performance traces to diagnose slow rendering and high resource usage. This Skill provides step-by-step guidance on using Instruments to perform root-cause analysis.

Why does my SwiftUI app have high CPU usage and excessive view updates?

Excessive view updates and high CPU usage in SwiftUI are often caused by expensive body evaluations and layout thrash. This Skill audits your runtime performance to diagnose these bottlenecks and guide remediation.

What are common SwiftUI performance anti-patterns and code smells?

Common SwiftUI performance anti-patterns include expensive body computations, identity churn, and inefficient lazy loading. This Skill identifies these code smells and provides specific examples and solutions to optimize rendering.

Can I diagnose SwiftUI view lifetime issues and identity churn?

Yes, diagnosing SwiftUI view lifetime issues and identity churn is possible through runtime performance auditing. This Skill identifies these specific performance pitfalls and guides remediation to prevent unnecessary view updates.