Testing Apple Xcode 27 Coding Agent: Ships to TestFlight but Fails Complex Game State
atShruti · x · 2026-08-01
A dev team spent the weekend testing the Apple Xcode 27 beta coding agent to build a multiplayer poker app, comparing it with tools like Replit and Rork.
- Initial Success: The agent successfully deployed the app to TestFlight based on Claude designs. It even autonomously opened a browser to create identities on Apple's Developer Portal.
- GameKit Limitations: The build failed when implementing GameKit. The author noted that GameKit is designed for arcade matches, lacking the shared state, groups, and standings needed for persistent friend lobbies. Swift and GameKit currently don't feel "agent ready."
- Stack Pivot: The team ultimately rebuilt the app using Expo, React Native, and Firebase, leveraging penpot.dev designs while running 3 agents in parallel.
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