macos
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Vibe Coding SwiftUI: The Joy and Cost of Building macOS Apps Without Knowing Swift
Simon Willison used Claude Opus 4.6 and GPT-5.4 to vibe code two macOS menu bar apps — one for network traffic, one for GPU stats. The entire SwiftUI app fits in a single file, no Xcode needed. But he's the first to admit: he has no idea if the numbers are accurate.