axiom-swiftui-performance

Profile SwiftUI apps with Instruments 26 to identify and fix performance bottlenecks.

3|Updated Jan 19, 2026
One-click install
npx skills add https://github.com/harivansh-afk/claude-code-vertical --skill axiom-swiftui-performance
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: axiom-swiftui-performance
Source: https://github.com/harivansh-afk/claude-code-vertical/tree/main/skill-index/skills/axiom-swiftui-performance
Command: npx skills add https://github.com/harivansh-afk/claude-code-vertical --skill axiom-swiftui-performance

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill helps engineers identify and fix performance bottlenecks in SwiftUI apps by using Instruments 26 to detect long view updates, unnecessary updates, and environment update costs, enabling targeted optimizations.

Core Features & Use Cases

  • Profile SwiftUI with Instruments 26 to locate long view body updates and other expensive tasks.
  • Analyze Cause & Effect Graphs to trace data flow and identify update propagation.
  • Apply per-view dependencies and caching strategies to reduce unnecessary updates and improve scroll performance.
  • Use cases include fixing laggy lists, reducing frame drops during fast scrolling, and isolating expensive UI work in large SwiftUI apps.

Quick Start

Run a profiling session using the SwiftUI template in Instruments, then inspect the Long View Body Updates lane and use the Cause & Effect Graph to identify the responsible state changes.

Frequently Asked Questions about axiom-swiftui-performance

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

FAQPage Schema
How do I fix laggy scrolling and frame drops in my SwiftUI app?

To fix laggy SwiftUI scrolling, profile your app using the SwiftUI Instrument to locate long view body updates and apply per-view dependency optimization to reduce unnecessary frame drops.

What is a Cause and Effect Graph in SwiftUI profiling?

A Cause and Effect Graph is a profiling feature in Instruments 26 used to trace SwiftUI data flow, helping you identify which state changes propagate updates and cause expensive view body computations.

Can I use this SwiftUI profiling approach for large apps with environment update costs?

Yes, this profiling approach diagnoses environment update costs and unnecessary view updates in large SwiftUI apps by analyzing data propagation and applying caching strategies to mitigate expensive UI work.

Do I need Xcode 26 to profile SwiftUI performance bottlenecks?

Yes, diagnosing and mitigating SwiftUI performance bottlenecks with the SwiftUI Instrument and Cause and Effect Graphs requires Xcode 26 and Instruments 26 to detect long view updates.

How do I reduce unnecessary SwiftUI view updates?

To reduce unnecessary SwiftUI view updates, analyze the Cause and Effect Graph to isolate the responsible state changes, then apply per-view dependencies and caching strategies to optimize update propagation.