Performance Profiler

Checklist

View Redraws

• Views only redraw when dependencies change
• @State properly scoped
• Stable view identity (no random IDs)

Lists

• Use List not ScrollView + VStack for large data
• Stable Identifiable IDs
• Lightweight row views

Memory

• No retain cycles ([weak self] in closures)
• @StateObject for owned objects
• Image caching for remote images

Body Computation

• No heavy work in view body
• Pre-compute expensive operations

Quick Wins

Issue	Fix
Parent redraws	Extract stable child views
Expensive body	Pre-compute or cache
Unstable IDs	Use UUID in Identifiable
Retain cycle	[weak self]
Broad animation	Scope to specific views

Debug

let _ = Self._printChanges() // In view body

Severity

• 🔴 Critical: Visible lag, leaks
• 🟡 Moderate: Noticeable impact
• 🟢 Minor: Optimization opportunity