Guides, build fixes and upgrade notes for React Native and Expo developers, written while maintaining 21 production templates.
September 14, 2026 · React Native, Expo, fitness app, tutorial, NativeWind, Expo Router
The screens a fitness tracking app needs, the Expo and React Native stack to build them with, and the routing, theming and chart code to get from empty project to working app.
Read more →September 14, 2026 · Expo, Expo SDK 57, Xcode 26, React Native, iOS build, expo-modules-jsi
npx expo run:ios fails on Xcode 26.2 and 26.3 with 'RuntimeScheduler cannot be annotated with SWIFT_RETURNS_RETAINED' and 'sending resultPtr risks causing data races'. Here is why it happens and a patch-package fix that works today.
Read more →September 14, 2026 · Claude Code, Cursor, AI coding, React Native, Expo, vibe coding, CLAUDE.md
AI coding agents are far more reliable when they work inside an existing codebase with conventions to follow. How to use Claude Code or Cursor with an Expo template, what to put in CLAUDE.md, and the prompts that work.
Read more →September 14, 2026 · Expo, Expo SDK 57, React Native, expo-doctor, upgrade, maintenance
A repeatable checklist for updating Expo SDK 57 apps: expo-doctor, expo install --fix, stale native folders, patch-package pitfalls, and the verification steps that catch breakage before your users do.
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