SwiftUI Performance Optimization

When to Use This Skill

Use when:

• App feels less responsive (hitches, hangs, delayed scrolling)
• Animations pause or jump during execution
• Scrolling performance is poor
• Profiling reveals SwiftUI is the bottleneck
• View bodies are taking too long to run
• Views are updating more frequently than necessary
• Need to understand cause-and-effect of SwiftUI updates

Example Prompts

These are real questions developers ask that this skill is designed to answer:

1. "My app has janky scrolling and animations are stuttering. How do I figure out if SwiftUI is the cause?"

→ The skill shows how to use the new SwiftUI Instrument in Instruments 26 to identify if SwiftUI is the bottleneck vs other layers