Can it help find memory leaks in iOS apps?

Yes, it offers expert guidance on identifying retain cycles, using weak references correctly, and leveraging Xcode Instruments' Leaks and Allocations tools.

How does this skill help with SwiftUI performance?

It provides specific implementation patterns for reducing view invalidations, caching heavy objects like DateFormatters, and using Equatable to prevent unnecessary body updates.

Does it provide strategies for app launch optimization?

Yes, it includes patterns for deferring non-essential work, utilizing lazy initialization, and moving heavy setup tasks to background threads.

Which Xcode Instruments does this skill cover?

It provides guidance for the Time Profiler, Allocations, Leaks, SwiftUI view update tracker, and Core Animation instruments to detect offscreen rendering and blending issues.

Swift Performance Optimizer

Name: Swift Performance Optimizer
Author: fusengine

byfusengine

0•

Mobile Development

Optimizes SwiftUI and Swift application performance through advanced profiling, memory management, and rendering efficiency patterns.

The swift-performance skill is a specialized tool designed to help developers diagnose and resolve performance bottlenecks in iOS and Apple platform applications. It provides expert guidance on optimizing SwiftUI view hierarchies, implementing efficient lazy loading strategies, and preventing memory leaks using ARC best practices. By integrating Instruments profiling knowledge with modern Swift patterns like @Observable and Sendable, it enables developers to reduce app launch times, eliminate UI stutters, and ensure efficient resource utilization in production-grade Swift apps.

Key Features

01Lazy loading implementations for complex lists and heavy views

02SwiftUI view rendering and state invalidation optimization

03Instruments profiling guidance for Time Profiler and Core Animation

04Memory leak detection and ARC retain cycle management

05App launch time reduction and main-thread efficiency patterns

060 GitHub stars

Use Cases

01Identifying and resolving memory leaks in complex Swift class hierarchies

02Refactoring app initialization to improve startup speed and responsiveness

03Diagnosing and fixing slow scrolling or choppy UI transitions in SwiftUI

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add fusengine/agents swift-performance

For use in Claude.ai and ChatGPT

Download Skill