How does it assist with battery and thermal issues?

It provides strategies for batching network requests, reducing location update frequency, and monitoring energy logs to prevent device overheating.

How does this skill help with UI responsiveness?

It identifies heavy computations incorrectly placed in SwiftUI View bodies and provides patterns for offloading those tasks to ViewModels or background threads using Swift Concurrency.

Can it help me find memory leaks?

Yes, it guides you through capturing weak self references in closures and provides specific xctrace commands to run the Leaks template for deep memory analysis.

What SwiftUI-specific optimizations does it offer?

The skill suggests modern best practices like using @Observable for granular updates, EquatableView for expensive subviews, and drawingGroup() for complex graphics rendering.

iOS Performance Expert

Name: iOS Performance Expert
Author: willsigmon

bywillsigmon

•

Mobile Development

Optimizes iOS applications by identifying and resolving main thread bottlenecks, memory leaks, and excessive battery drain.

The iOS Performance Expert skill empowers Claude with the specialized knowledge needed to audit and enhance the performance of SwiftUI and UIKit applications. It focuses on critical areas such as preventing UI lag by moving heavy work out of View bodies, optimizing SwiftUI rendering with granular state management, and diagnosing memory leaks using Instruments. By providing actionable guidance on energy efficiency and profiling commands, this skill helps developers build smoother, more responsive mobile experiences that minimize thermal throttling and maximize battery life.

Key Features

01Energy management strategies for network and location-heavy apps

02Detection and refactoring of main thread violations in View bodies

037 GitHub stars

04Memory leak prevention through weak reference pattern analysis

05SwiftUI rendering optimization using @Observable and EquatableView

06Automated profiling commands for xctrace Time Profiler and Leaks

Use Cases

01Troubleshooting and fixing memory-related crashes and retain cycles

02Optimizing background tasks and network batching for better battery life

03Reducing UI stuttering and frame drops in complex SwiftUI lists

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add willsigmon/sigstack performance-expert

For use in Claude.ai and ChatGPT

Download Skill