The guests trace React Native’s roots to React’s focus on the view layer and the separation of React core from its renderers. That architecture let React Native render native views, while React DOM continued to render for browsers. They describe shared components, hooks, state logic, and API access as a bridge across platforms.
Crossing Paths of React And React Native Ecosystems
Speakers
Callstack host Mukesh Kinski talks with Jack Herrington, principal full-stack engineer and Blue Collar Coder creator, and Simon Grimm, Galaxies.dev creator and React Native educator, about the React and React Native ecosystems on React Universe on Air.
Jack says his React Native work was smooth until he added an ONNX Runtime driver for local AI, where he ran into more friction. He praises Expo’s built-in capabilities, including camera features, and says it is a strong path for apps that stay within its supported ecosystem. The guests compare Expo’s accepted role in React Native with the more contentious choice of frameworks in web React.
The guests describe React Native developers as highly engaged, partly because early tooling required hands-on troubleshooting and companies built libraries and support. Jack contrasts that with web development’s more polished starter experience, where developers may expect things to work immediately. Simon says building and shipping a mobile app can feel especially rewarding because it integrates with personal device features such as the camera and microphone.
Simon argues React Native suits many projects when teams value shared code and faster delivery, while acknowledging that other frameworks fit some needs better. The discussion covers experiments in bringing React concepts across platforms, including server components, React Native Skia, and shared component libraries. They also note that web and native still have different renderers, navigation patterns, and platform requirements.
The guests discuss debugging React Native build failures involving Gradle, Swift, Xcode, Node versions, and dependency changes. Simon describes dependency bit rot and says Xcode changes can break workshops that previously worked. They suggest that familiarity helps developers recognize recurring issues, such as provisioning profile problems, while Expo reduces some but not all friction.
Takeaways
- Choose React Native when shared code and delivery speed matter more than the last few percent of platform-specific performance.
- Start with Expo to reduce setup friction, and plan for extra debugging if your app needs native modules or custom platform features.
- Treat web and native as distinct platforms: shared React logic does not remove differences in rendering, navigation, or tooling.
- Keep project environments reproducible and verify tutorials or workshop code against current toolchain versions.
- When evaluating a framework, weigh product needs and team costs alongside performance and native integration.
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What was claimed 12
- metricJack Herrington: Blue Collar Coder has 180,000 subscribers
“We've got 180,000 subscribers now”
YouTube Unverified1 source· Talk
- built
“I started my own YouTube channel called Blue Collar Coder”
YouTube Unverified1 source· Talk
- previously atJack Herrington previously at Nike
“and then at Nike, doing the same sort of thing”
YouTube Unverified1 source· Talk
- previously atJack Herrington previously at Walmart Labs
“I was the principal full-stack engineer at Walmart Labs”
YouTube Unverified1 source· Talk
- metricSimon Grimm: Close to 100K YouTube subscribers
“I'm close to 100K on YouTube”
YouTube Unverified1 source· Talk
- builtSimon Grimm built Galaxies.dev
“I'm the creator of Galaxies.dev”
YouTube Unverified1 source· Talk
- builtSimon Grimm built Rocket Ship
“I do my own podcast about React Native called Rocket Ship”
YouTube Unverified1 source· Talk
- built
Meta built React Native
“What began as an internal project at Meta grew”
3:07inReact Universe Conf 2025 KeynoteYouTube Verified4 sources· Talk
- metricReact Universe on Air: First episode under the renamed title
“this is the first episode of the same podcast with a new name”
YouTube Unverified1 source· Talk
- usesReact Native uses React
“separating the renderer ... from React core”
YouTube Unverified1 source· Talk
- featureExpo Modules: Provides built-in camera features including barcode and face scanning
“the camera has barcode and face-scanning features built in”
YouTube Unverified1 source· Talk
- featureReact Native: Renders to native controls on iOS and Android
“React Native renders to native controls on iOS and Android”
YouTube Unverified1 source· Talk






