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Engineering Blog

Notes from building Kinrox.

Deep dives into native Swift 6, SwiftUI performance on macOS, libmpv, local-network cryptography, and squeezing Spotify down from 2 GB to 196 MB.

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Kinrox: native macOS Spotify player, video player with an iPhone remote, and the Matrix screensaver
·14 min read

What Happens When a Developer Has Unused AI Tokens Left: A 196 MB Spotify Player (Instead of 2 GB), a Mac Video Player with an iPhone Remote, and—Most Importantly—a Matrix Screensaver

How leftover token quota turned into Kinrox: a native Swift 6 & SwiftUI macOS video player on libmpv with an encrypted iPhone remote, a standalone 196 MB Spotify player powered by Spotify Soloist, a C watchdog reaper, an AttributeGraph deep dive, and a 30 fps Matrix screensaver.

#macos#swift#swiftui#spotify#open-source