Master SwiftUI Performance

Build blazingly fast, efficient, and scalable apps with the future of UI development. Stop fighting the render loop and start shipping silky-smooth interfaces.

  • Faster Rendering Pipelines
  • Smoother Animations (60fps guaranteed)
  • Stable, Predicable State Management
Optimize Your SwiftUI Apps Now
Abstract visualization of a complex SwiftUI view graph organizing into a clean, optimized structure
Visualizing the optimization of complex view hierarchies.

What You'll Master

This course moves beyond the basics of syntax into the internal mechanics of the Diffable Data Source and the Attribute Graph.

Unveil the mystery behind how SwiftUI decides what to redraw. We cover the View Identity concept, the lifecycle of a struct, and how to minimize the invalidation blast radius.

Data-driven debugging is key. Learn to use `Self._printChanges()`, analyze the Xcode Instruments template for SwiftUI, and identify exactly which property triggered a render.

Stop abusing `@ObservedObject`. We deep dive into the performance cost of `@State` vs `@StateObject` vs `@ObservedObject`, and when to inject dependencies versus passing bindings.

Handling large datasets without scrolling glitches. We explore `LazyVStack` memory management, `id` collisions in Lists, and prefetching strategies.

Keep your UI responsive while fetching data. We cover the `.task` modifier, efficient MainActor usage, and avoiding blocking the UI thread during heavy computation.

Architecture matters. Learn to modularize features, reduce compilation times, and structure your view hierarchy for long-term maintainability.

Avoid Common SwiftUI Pitfalls

Mistakes that even senior developers make with declarative UI.

Excessive `ObservableObject`

Overusing observable objects near the root of your view hierarchy causes massive ripple effects, redrawing hundreds of views unnecessarily for a single boolean change.

Computation in `body`

The `body` property is computed frequently. Placing filtering logic, sorting algorithms, or heavy data formatting directly inside it is a guaranteed way to drop frames.

List Data Identity

Using unstable `id` keys (like random UUIDs generated on init) forces SwiftUI to treat every row as a new view during updates, destroying scroll performance and animation context.

Mismanaged Lifecycles

Confusing the lifetime of the `View` struct with the lifetime of the underlying render node leads to state loss and unexpected resets of UI components.

Elena Vance, Lead SwiftUI Architect and Course Instructor
Lead Instructor

Elena Vance

Former Engineering Lead at Silicon Valley Graphics Core. Creator of the 'FluxState' library.

Elena has been shipping SwiftUI since day one of the WWDC 2019 beta. Having consulted for Fortune 500 mobile teams, she specializes in refactoring legacy UIKit applications into pure, declarative SwiftUI codebases. She is a regular speaker at SwiftSummit and maintains three popular open-source libraries focused on iOS performance monitoring.

"SwiftUI is magic, but even magic follows the laws of physics. My goal is to show you the mechanics behind the magic so you can build apps that feel instantaneous."

Build Modern, Performant Apps

$249

One-time payment for lifetime access
  • Comprehensive SwiftUI Code Samples
  • Performance Profiling Workshop
  • Private Discord ID access
Enroll in SwiftUI Optimization

100% Money-back guarantee for 30 days.