How to get started with LynxJS? Here’s the 1-minute cheatsheet + full article clstk.com/4hNTtFe

Meta's $1.5M React Native competition for Meta Quest is on. Wondering what to build? @jwr.ski brainstormed 4 app ideas that go beyond 2D ports, from social to meditation apps. Get your inspiration (and tool suggestions) before you start coding ⬇️ clstk.com/3LiPQep

Tomorrow, we’re talking brownfield React Native with Zalando. We’ll cover how it fits into an existing native codebase, how to structure it, and what still feels awkward in practice. Sign up for a live walkthrough & Q&A session 🎙️ clstk.com/3JIbisy

Can you use your favorite Expo & React Native libraries on Meta Quest? Mostly, yes. But for key native features, you'll need specific alternatives. @jwr.skiwrote a guide on what works, what doesn't, and what to use instead. Save yourself the guesswork and read it now ⬇️ clstk.com/4ojKhLh

Reminder 📅 We’re hosting a live session on how React Native fits into an existing mobile app with native code and platform constraints. Expect a walkthrough of Zalando’s architecture, migration decisions, and dev experience solutions, plus time for live Q&A: clstk.com/3WZ0OrN

Not all migration stories look the same. For the NFL app, greenfield made more sense than brownfield in 2018. The tech wasn’t there, and a ground-up rebuild made more sense from the business goals perspective. Tune in to the episode for the full migration story clstk.com/4np2q9e

Here comes the playbook for testing React Native TV apps. @thymikee.bsky.social covers the whole process: adapting your JS tests for remote focus, writing E2E automation with WebdriverIO and Appium, and the crucial final step of testing on real hardware using device farms 📖 clstk.com/4n4epsn

Zalando is integrating React Native into a large production app using a brownfield setup. On Nov 5, we’ll team up to share how their engineers are handling interop, dev experience, and gradual migration. 🕔 5PM CET 🎙 Sign up to join the live session at clstk.com/3L8wici

AI SDK 5 is a major rewrite. @lgrammel.bsky.social (@vercel.com) explains why it was necessary and breaks down the new architecture: a v2 provider spec, end-to-end type safety, and new controls for building agentic, multimodal tool-calling loops ➡️ youtu.be/xgR-Jr9oSxA

Our latest guide shows how to get started with React Native on Meta Quest VR using Expo. From quick setup with Expo Go to leveraging full development builds for HorizonOS, we cover everything you need to build immersive experiences with your existing skills ➡️ clstk.com/475KYSh

Adapting React for TV brings unique UI challenges like focus management & D-pad navigation. In this talk, Amazon’s Eric Fahsl demos Kiro.dev, a spec-driven AI assistant that turns prompts into structured tasks to solve these problems predictably ➡️ clstk.com/4o2XDLI

Why build 18 separate TV apps when you can build one? Learn how to scale without scaling your team in @lukasz.app’s article, which is a preview of the upcoming TV Guide 2026 co-authored with Amazon 📖 clstk.com/3IQ9Y6J

During September AI Meetup, @szymonrybczak.bsky.social unpacked the architecture of on-device LLM inference in React Native. Now the recording is live. Watch it & find out how we built React Native AI using the AI SDK to integrate with MLC LLM Engine and Apple's foundation models: clstk.com/4okrZJ8

🎉 Introducing React Native Harness - a lightweight framework for testing native modules directly on device or emulator. Write tests in a Jest-like syntax, run them in a real React Native runtime, and verify native behavior without mocks.

NFL engineering moves fast because kickoff and the Super Bowl don’t wait 🏈 On React Universe On Air, @grabbou.com and Michael Blanchard share how the NFL ships RN across mobile, web, and TV: GitHub Actions + Expo Build, 20–30 PRs daily, Expo SDKs. Watch + resources ➡️ clstk.com/4nSz5Fd

What does it take to keep NFL fans connected on every screen (iPhones, Xboxes, TVs, and more) every game day? @grabbou.com chats with Michael Blanchard (Director of Engineering at #NFL) about scaling React Native across every surface. Set a reminder for the premiere on October 14 📅

Still wrestling with generic tools for your dev workflow? It's time to build your own. In this talk from our AI Meetup, @raf.dev shows you how to create custom, AI-powered tools like a personal slide generator with React and an AI dev notebook with Astro ➡️ youtu.be/MWGeGtIhf7o?...

Last year, we proved that React Native is a great fit for Vision Pro. For React Conf 2025, we’re doing the same for @MetaQuestVR. We built a showcase app to show how React Native scales to VR platforms, and the results speak for themselves! Check out what we did on our blog👇

We just launched a new React Native showcase for Meta Quest VR 🚀 Our demo on Horizon OS features camera, audio, and fluid navigation powered by popular libraries. It proves you can use existing mobile skills to build high-performance VR experiences. Read the full story by @jwr.ski on our blog ⬇️

At React Conf this week? Let's talk about the future of the ecosystem. The Callstack team is just outside the Casablanca Ballroom. Drop by to discuss where React is heading and take our React Maturity Survey to see how your app can lead the way.

The future of React and React Native is now stewarded by the new React Foundation and Callstack is a founding member.This milestone ensures the long-term stability of the core infrastructure and a neutral, collaborative home for the ecosystem you rely on. Press releases below ⬇️

We’re so excited to be co-hosting React Conf again this week! Find us at: - Callstack booth (main hall) - “React Everywhere: Bringing React Into Native Apps” by @grabbou.com, Oct 8, 2:05PM - “What’s the Framework of the React Future?” panel with @thymikee.bsky.social, Oct 8, 4:20PM 👉 conf.react.dev

At @reactuniverseconf.com, @lukasz.app talked with Joel Arvidsson‬, @jayz.us, and Thibault Malbranche. They covered React Native stability desktop apps, tooling gaps, and what 1.0 should mean. Watch and explore show notes at clstk.com/48uIpKi

One of the most common errors in React Native development on Android is “Unable to load script”. We put together a clear troubleshooting guide covering Metro, ports, and network configs to help you solve the issue quickly ➡️ clstk.com/47N2Ody

In Prague next week? Catch Szymon Chmal at The Spark as he breaks down how he hacked React Native DevTools. No forks needed. 📅 Sept 16, 6–10 PM, Prague, Czech Republic ➡️ guild.host/events/the-s...

This week we're heading to China 🇨🇳 At GOSIM Hangzhou 2025 @thymikee.bsky.social & @kwasniew.ski will walk through Rock - an open-source framework that helps teams skip the build step and move faster with React Native. 📍Sept 13, 14:00–17:30, Venue 9 - B05 hangzhou2025.gosim.org/schedule/nat...

The AI Meetup is tomorrow 🎉 Join us on Sept 2, at 6 PM at Concordia Design, Wrocław. Get ready for talks on AI SDK, on-device LLMs, TV apps, and custom AI tools. Last chance to RSVP 👉 clstk.com/45SOOh3

You tested it, it passed, it shipped. But is your app really working for users? Observability isn't a luxury; it's the feedback loop your app depends on. In the latest podcast episode, we discuss spans, logs, metrics, real user monitoring, and all things observability and OpenTelemetry-related 👇

The @reactuniverseconf.com vibes start early this year. On Sept 2, we’re hosting the AI Meetup organized by Callstack, sponsored by @vercel.com 🎤 Expect an evening of talks, live demos, and networking before the conference even begins. Seats are limited. Save your spot below 👇

What if your React Native app could speak the same telemetry language as your backend? @lukasz.app talks with Adam Horodyski and @embrace.io’s Jonathan Munz on OpenTelemetry, OTLP, and why standards matter for mobile. Give this episode a listen and check out the full show notes 🎙 clstk.com/4oAMjab

To celebrate 10 years of React Native, we’re holding a panel that will explore what got us here, and what’s next. On stage: @ccheever.com, @grabbou.com, @cortini.co and more 👀 The occasion calls for a 10% ticket price discount, so grab yours now 🎟️ clstk.com/46SgbIX

What’s still unsolved in React Native observability? @lukasz.app, Embrace’s Jonathan Munz and Adam Horodyski have thoughts and some answers. Catch the new React Universe On Air episode premiere on YouTube on August 13 📅 youtu.be/DpHza-0R0mg

It’s happening soon ⏰ Join Callstack and @expo.dev for a live session on migrating React Native Community CLI apps to Expo the right, non-disruptive way. There’s still time to register and join live ➡️ clstk.com/4eZQqbo

If you want to add some Expo tools/services to your existing React Native project this webinar is for you. Callstack’s @grabbou.com and Expo’s @keith.bsky.social will show you the incremental-migration best practices. Sign up for the live walkthrough and bring your questions! clstk.com/3UrUbNs

The full agenda for React Universe Conf 2025 is here 💥 Expect core team insights, cross-platform architectures, OSS stories, and real-world scaling lessons. We’re bringing together devs from Meta, Microsoft, Vercel, Klarna & more. We still have some surprises up our sleeve 👀

Start small, scale smart. On Aug 5, @grabbou.com & Keith Kurak will walk you through how to: 🧩 Start @expo.dev adoption with just 1 module 🚀 Add EAS Build, OTA updates, Router when it *actually* makes sense 🛑 Avoid common migration traps Register at clstk.com/44T6WFu

Thinking of adopting Expo in a React Native project but not sure how to get started without breaking things? Callstack’s @grabbou.com and @expo.dev’s Keith Kurak will show you how to migrate from RN CLI to Expo one step at a time. Sign up for the webinar & bring your questions 📅 clstk.com/4f4Bxou

Better React Native starts like a good meal kit: clear recipe, quality ingredients, zero guesswork. We trained 15 HelloFresh engineers in 8 weeks, resulting in faster delivery and a reusable onboarding playbook. Dig into the case study 👉 clstk.com/4kRmQX5

For a long time I thought the partial adoption/brownfield approach was an amazing way to use React Native. But it always scared me how hard could it be to get started. And that's the exact reason why we created yet another book @callstack.com. Get a copy free of charge here: clstk.com/4kU87L3

Ever wondered why React’s "Fiber" is called that? Turns out it’s more than a name. It’s rooted in coroutines, user-space threads, and task scheduling. This deep dive explains how React, game engines, and modern runtimes squeeze performance using fiber-based systems. clstk.com/44N5FRQ

Step-by-step, code-first, and written by the devs who built the tooling. Our new ebook is your guide to integrating React Native into native apps in a modular, gradual, and production-ready way Includes: ✅ Packaging configs ✅ XCFrameworks & AARs ✅ Brownfield best practices Read it now 👇

Spinners are out, and shimmers are in ✨ We just released a new library for React Native that makes your loading states beautiful, fast, and modern. It’s called `react-native-fast-shimmer` and @q1w1n.bsky.social wrote an article about it clstk.com/44Qs8gV

Want to write your first cross-ecosystem native module? @shirakaba.bsky.social shares how to use Node-API to create a native module that runs not only on Node.js, but React Native, too clstk.com/3INHNVm

The React Universe NYC 2025 meetup talks are now live on our playlist! 🎥 Featuring: - Brownfield RN adoption using RNEF (Callstack) - Debugging with OpenTelemetry (Embrace) - Global observability insights (HelloFresh) Check them out here: youtube.com/playlist?lis...

Big news: the React Native DevTools framework is dropping by the end of this month 🔥 The name? It's locked in and I'm so excited about it. It kicks off a whole family of tools designed to push React Native even further… but I'm not allowed to say anything else at this point 🙊

What if your CI only built what mattered? In our latest React Universe On Air, Jordan Powell explains how Nx helps teams build monorepos that don’t feel monolithic. Watch here → clstk.com/44yRKib

Live dev session - what should we play with today? No new ThisWeekInReact yet (we’re refreshing our inbox hourly), and I just did the NODE-API stream yesterday. I forgot to show off BISON last week. If you wanna see what that is, join us live! Streaming today at 5 PM CET clstk.com/40joutb

We go live at 5PM CEST ⏰ Node-API in React Native: high-performance native modules. Watch it here 👉 clstk.com/3U7qfG8

React Native gets Apple Intelligence 🎉 We just dropped preview support for on-device Foundation Models: • Text gen & treaming • Structured output • Vercel SDK-ready Find out more in @grabbou.com's blog post ➡️ clstk.com/4nSRzG4

Monorepos can be intimidating. Thousands of files, tangled dependencies, CI times that never end… But what if they could feel like a piece of cake? In our next episode, Jordan Powell (Nx) shows how smart tooling makes monorepos scalable and actually pleasant to work in 👉 youtu.be/9OqzGMWHZTA