Shall I use ViewModels?
Asked on 06/11/2025
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Using ViewModels can be beneficial for optimizing SwiftUI performance, especially when you want to make your views' data dependencies more granular. In the session Optimize SwiftUI performance with Instruments, it is demonstrated how creating an observable ViewModel for each view can help reduce unnecessary view body updates. By having each view depend directly on its own ViewModel rather than a larger data structure, you can ensure that only the necessary views are updated when data changes. This approach can help keep your app running smoothly by minimizing the number of updates and improving performance.
Optimize SwiftUI performance with Instruments
Discover the new SwiftUI instrument. We’ll cover how SwiftUI updates views, how changes in your app’s data affect those updates, and how the new instrument helps you visualize those causes and effects. To get the most out of this session, we recommend being familiar with writing apps in SwiftUI.
Code-along: Elevate an app with Swift concurrency
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