performance

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3 posts in this topic

Posts in this Topic

ios

Migrating Jar's home screen to @Observable

How we moved our busiest screen off ObservableObject — one migration, nine state objects, and 26% fewer view-body invocations for the same pixels.

Why Jar's SwiftUI Home Feed Scrolls on UIKit

Jar's new home feed is SwiftUI on screen and a UICollectionView underneath. Why LazyVStack couldn't carry it, and the five decisions that made SwiftUI cells scroll like native UIKit.

Journey of Reducing iOS App Size by 63%

Every mechanism, number, trap and dead end from taking the Jar iOS bundle from 460 MB to 170 MB: measurement, the size report, 20 levers, Kotlin/Native anatomy, and the two-package-manager crash-report loss.