Live Dev Session: Unistyles 3.0, SSR With Hermes & Expo SDK 52

React Native Conf 2025 brought huge announcements: React Foundation under Linux Foundation, React Compiler 1.0 and Hermes v1. What’s next for React Native and newest React Features.

A packed week in the React ecosystem: React experiments with a new <Activity> component, Expo SDK 54 speeds up builds, Expo Router v6 adds native-like navigation, Lynx 3.4 ships inputs & dev tools, TanStack Start hits RC, and React Router previews Framework Mode.

Core contributors from across the React Native ecosystem discuss stability, tooling, and the path to 1.0, from Flow to TypeScript, desktop apps, and how community fills the gaps left by Meta.

In Week 37 of our Live Dev Session we talked about React Universe Conf with guest Szymon, ranted about AI, explored what React Native 1.0 really means, reviewed Expo updates, and covered the latest moves in the React Native ecosystem.

React and React Native: are the two ecosystems pulling together or apart? Let's discuss their evolution, similarities, differences, and community dynamics.

Here comes a new chapter for The React Native Show: we're becoming React Universe On Air!

Explore key insights from introducing Apple Vision Pro at tech events. Discover its intuitive interface, immersive experiences, and the challenges faced.

Check out 5 tips on making the repository of your Open Source project more contributor friendly for both new maintainers & users.

React Native EU is back for an on-site 2023 edition! Find out why it's worth attending our React Native conference and how it's evolved since 2017.

Learn about Callstack's commitment to the Tech To The Rescue project supporting Ukraine: UA SOS app.

On International Women’s Day we spoke to women who make waves as React and React Native developers. Check what they said about their tech careers.

When working at Callstack, you can join our unique initiatives. Find out more about our conferences, meetups, hackathons & discussion panels. Join our team!

Learn how React Native AI uses a unified provider model to switch between cloud and on-device LLMs without rewriting application logic, enabling reliable AI experiences online and offline.

Learn how on-device models in React Native can call tools, interact with external APIs, and return structured outputs you can use directly in application logic.

Learn how to run third-party on-device LLMs in React Native using MLC LLM. Choose your models, run them efficiently across platforms, and keep a unified JavaScript API with React Native AI.

Learn how to use Apple’s built-in Foundation Models in React Native apps, reduce memory usage, and enable fast, fully on-device AI with React Native AI Apple.

Learn why on-device AI matters for React Native apps, how local LLMs behave offline, and what problems React Native AI is designed to solve from day one.

Learn how to implement a React Native TurboModule on Android, from the TypeScript spec and Codegen to the Kotlin implementation and package registration.

Learn how JavaScript, native module, background, and main threads interact in React Native TurboModules, and how to use GCD queues to run async work safely in Swift.

Learn how to expose typed, immutable constants from a Swift TurboModule using Codegen, and get full end-to-end type safety between native and JavaScript.

Learn how to emit native events from a Swift TurboModule and subscribe to them in JavaScript, including proper memory management and Codegen integration.

Learn how to build a fully working TurboModule in Swift, integrate it with Codegen, and bridge it through Objective‑C inside an Expo app.