---
title: Performance analysis
framework: swiftui
role: collectionGroup
path: swiftui/performance-analysis
---

# Performance analysis

Measure and improve your app’s responsiveness.

## Overview

Overview Use Instruments to detect hangs and hitches in your app, and to analyze long view body updates and frequently occurring SwiftUI updates that can contribute to hangs and hitches.

## Topics

### Essentials

- [Understanding user interface responsiveness](xcode/understanding-user-interface-responsiveness.md)
- [Understanding hangs in your app](xcode/understanding-hangs-in-your-app.md)
- [Understanding hitches in your app](xcode/understanding-hitches-in-your-app.md)

### Analyzing SwiftUI performance

- [Understanding and improving SwiftUI performance](xcode/understanding-and-improving-swiftui-performance.md)

## See Also

### Tool support

- [Previews in Xcode](swiftui/previews-in-xcode.md)
- [Xcode library customization](swiftui/xcode-library-customization.md)