Testing Apple Xcode 27 Coding Agent: Autonomously Ships to TestFlight, Fails at GameKit
atShruti · x · 2026-08-01
A developer tested the coding agent in Apple's Xcode 27 beta to build a multiplayer poker app, comparing it with tools like Replit.
- Impressive Wins: The agent successfully closed the loop from design to deployment. It autonomously wrote the code, opened a browser, created identities on Apple's developer portal, and pushed the app to TestFlight.
- Pain Points: The agent failed when building the core game logic using Apple's GameKit. GameKit lacks persistent groups, shared standings, and shared game states required for a persistent friends' game night. The developer noted that Swift and GameKit are not yet "agent ready."
- Final Solution: The team abandoned the native approach and rebuilt the app using Expo, React Native, and Firebase, orchestrating 3 agents in parallel via pen dot dev.
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