bitrig

Active

Vibe code, test, and deploy Swift apps. All from your iPhone.

Summer 2025Founded 20253 peopleSan Francisco, CA, USA

bitrig.com ↗LinkedIn ↗X ↗See on the Idea Map B2B momentum

About

Bitrig is the only vibe coder that writes native Swift, which is how the top mobile apps are coded. It's like Lovable for iPhone apps. Kyle and Jacob are creators of SwiftUI, Apple's UI framework for building modern iOS apps, and led its development for the past 10 years. Tim was co-founder and designer of Storehouse, where he won an Apple Design Award and was later acquired by Square. Download bitrig from the App Store: https://apps.apple.com/us/app/bitrig/id6747835910

Founders · 3

Kyle MacomberFounder

Apple

Stanford🎓 Stanford University

Kyle is the co-founder and CEO of Bitrig. Before Bitrig, Kyle spent over a decade at Apple where he co-created and led the development of SwiftUI. He also managed teams behind Swift Charts, WidgetKit, and the Swift Standard Library. Kyle holds a degree in Computer Science from Stanford University.

LinkedIn ↗X ↗

Tim DonnellyFounder

Apple🎓 University of Washington

Co-founder at Bitrig. Previously SwiftUI at Apple, Square, co-founder at Storehouse (acquired by Square). BFA Design, University of Washington.

LinkedIn ↗X ↗

Jacob XiaoFounder

Apple

Jacob is a co-founder of bitrig. Before bitrig, Jacob spent 15 years at Apple, where he co-created and led the development of SwiftUI. He also contributed to Xcode and UIKit during his time there. Prior to Apple, Jacob built Opacity, a graphical design tool.

LinkedIn ↗X ↗

Launch

Launched on Y Combinator · Aug 2025

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From the creators of SwiftUI

Bitrig offers a native Swift app-building platform that runs on a mobile device, enabling designers, PMs, and students to create, test, and deploy Swift apps via chat with AI and a no-Xcode workflow. It presents Bitrig as a one-stop tool for vibe coding, testing, and deployment using the same technology as professional developers.