✨ In September 2024, The React Native Show has become React Universe On Air ✨

In the second episode about security with Peter Fernandez from Auth0 by Okta, we focus on authorization. Tune in to discover key concepts like access control, delegated authorization, and the principle of least privilege. Learn how modern frameworks handle security and get practical advice for building apps that users will love and malicious forces will hate.

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Authorization: Security Deep-Dive With Okta (Part 2) | React Universe On Air #40

Here comes the moment we’ve all been waiting for: the first episode released under the new name! Callstack’s podcast has changed from The React Native Show to React Universe On Air to reflect a broader scope of topics we want to discuss, spanning not only React Native, but also React and beyond. 

That’s why we decided to kick off the refreshed brand with an episode that also sits at the intersection of both React and React Native ecosystems. And what better way to do this than to get together three podcasters:
💜 Jack Herrington, Principal Engineer and YouTube Educator focusing on React,
💜 Simon Grimm, Founder of Galaxies.dev and YouTube Creator focusing on React Native,
💜 our own Łukasz Chludziński, the host of Callstack’s podcast marrying the two worlds together.

The trio discusses:
✨ the evolution, similarities, and differences between the React and React Native ecosystems,
✨ community dynamics and latest advancements,
✨ the challenges and benefits of working with React-based technologies,
✨ the ins and outs of developing apps in React Universe for different platforms,
✨ the future of React in the software development world.

Share your feedback on this episode ✨ https://bit.ly/ep42feedback

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Crossing Paths of React And React Native Ecosystems | React Universe On Air #42

Fasten your seatbelts, and get ready to learn about Nitro Modules straight from its creator, Marc Rousavy!

On September 13, Marc released Nitro Modules to the public. If you haven’t heard about it yet, it’s high time caught up, because it’s a framework for creating fast native modules that significantly outperform Turbo and Expo Modules, making your React Native app even faster!

Tune in to the episode to learn about:
💜 what led to the creation of Nitro Modules
💜 technical details and benefits of Nitro Modules
💜 performance comparison with Turbo Modules and Expo Modules
💜 behind the scened of Nitro Modules development
💜 starting a new project and migrating an old one to Nitro Modules
💜 developer experience and plans for the future

Share your feedback on this episode ✨ https://bit.ly/coffeetalk22feedback 

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Superfast Nitro Modules with Marc Rousavy | React Universe On Air: Coffee Talk #22

Looking for a cost-effective way to develop high-performance mobile apps for both iOS and Android? At Kellton, we specialize in React Native app development, allowing you to build cross-platform apps with a single codebase—saving you time, money, and resources. Discover how our expert team can bring your app ideas to life and help you reach a wider audience with a seamless user experience. Contact us today to get started!

Get more information about the offerings visit: https://www.kellton.com/services/react-native-app-development

Unlock Cost-Effective, Cross-Platform Success with Kellton's React Native App Development Services

Transform Your Mobile App Strategy with Kellton's React Native Development Services

In 2020, Shopify decided to switch to React Native for both new and existing apps. In November 2024, the migration of their mobile app was officially over, resulting in a remarkable 86% unification of code across platforms and a streamlined development process that stems from eliminating 1.8 million lines of redundant code, reducing build times, and achieving seamless feature parity between iOS and Android. 

Let’s take a closer look at the decision-making process involved in this transformation with Mike Grabowski (@grabbou at X) as our host and Mustafa Ali (@mustafa01ali at X), Shopify's Director of Engineering, as his guest.

Learn about the motivations for this change, such as reducing duplicated efforts and enabling seamless developer collaboration across web and mobile, the challenges faced, particularly in optimizing performance for their high-usage point-of-sale app, and the essential role of native developers in ensuring exceptional app performance and user experience.

Check out episode resources on our website 🧠 https://hubs.li/Q031_HNC0 
Download free React Native Migration Guide 📖 https://hubs.li/Q031_Hxy0 

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Lessons from Shopify's Migration to React Native with Mustafa Ali | React Universe On Air #46

Picture this: your teams are innovating independently, deploying updates swiftly, and navigating complex app architectures with ease. Microfrontends make this possible, much like microservices revolutionized backend development. But what about mobile? How can this approach transform your app development strategy?

To explore these questions, we’re joined by Zack Chapple (https://x.com/Zackary_Chapple ), Co-founder and CEO of Zephyr Cloud, and Jakub Romańczyk (https://x.com/_jbroma ), maintainer of Re.Pack at Callstack. They dive into the evolution of microfrontends, starting with the fundamentals: what they are, why they matter, and how technologies like Module Federation enable them. Zack shares insights on tools like Webpack, Rspack, and Zephyr Cloud, showing how they streamline managing complex frontends.

The episode then shifts focus to mobile, where Zack and Jakub break down the Zephyr Cloud and Re.Pack collaboration. Learn how to tackle platform-specific challenges like managing version compatibility, over-the-air updates, and reducing bundle sizes—all while staying app store compliant. Plus, hear about real-world scenarios, like dynamically loading features or ejecting unused code to optimize performance, and get a sneak peek at Re.Pack 5.

Check out episode resources on our website 🧠 https://hubs.li/Q034233Q0 
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Mobile Microfrontends With Zephyr Cloud and Re.Pack | React Universe On Air #47

Reanimated 4 is here to change the way we build animations in React Native. With CSS-style animations and transitions, animations are now easier to write, more predictable, and work more like they do on the web.

In this episode, Ola Desmurs-Linczewska (https://x.com/p_syche_) sits down with Tomasz Zawadzki (https://x.com/tomekzaw_) and Mateusz Łopaciński (https://x.com/MatiPl01) from Software Mansion to discuss what’s new in Reanimated 4, why React Native is moving toward web standards, and what these changes mean for developers.

We talk about:
💜 Why Reanimated 4?—the motivation behind CSS-based animations and what problems they solve.
💜 How CSS animations & transitions work in React Native—use the syntax you already know!
💜 New Architecture-only support—why the old architecture is gone and what it means for migration.
💜 Aligning React Native with web standards—how Meta and the community are making React Native more like the web.
💜 Modularity and the future of Reanimated—splitting the library into smaller packages for better maintainability.
💜 Migration tips and developer experiments—how to upgrade, test new features, and start using CSS animations today.

Reanimated 4 is in beta now, so experiment with it and share your impressions in the comments!
Check out episode resources on our website 🧠 https://hubs.li/Q036Kc1k0 
Share your feedback on this episode ✨ https://bit.ly/fdbck48 
Become a speaker at React Universe Conf 2025 🎟 https://sessionize.com/react-universe-conf-2025/ 

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Reanimated 4 is the Future of Smooth React Native Animations | React Universe On Air #48

Eighteen TV platforms, one codebase—what could possibly go wrong? Tune in to find out how to tackle the technical and UX challenges of building for Android TV, Apple TV, Fire TV, Tizen, and more—all with React Native!

In the 49th episode of React Universe On Air, Łukasz Chludziński (https://x.com/lukasz_app) teams up with Michael Khirallah (https://x.com/mkralla11), Senior Director of Engineering at DIRECTV, and Chris Trag (https://x.com/chris_trag), Developer Evangelist at Amazon, to discuss why cross-platform development is not just a time-saver but also a way to deliver a consistent user experience.

You know that at Callstack, we’re all about performance—and with devices like Samsung’s Tizen TVs released in 2017 (running Chromium 47!), performance is a serious concern. That’s why we asked our guests to share real-world techniques for optimizing TV apps, from architectural choices to strategies that avoid unnecessary performance hits on newer devices.

The complexity of TV app development doesn’t stop at coding, though. Our host and guests know it all to well, so they couldn’t help but discuss how they balance unit, integration, automation, and manual testing, leveraging tools like AWS Device Farm and custom-built frameworks to ensure stability across all supported platforms. What’s in it for you? Tips on automating QA without compromising thoroughness and why manual testing remains crucial for end-user experience.

Want to get started with React Native TV app development? Download our guide 📖https://hubs.li/Q038xx4l0 

Check out episode resources on our website 🧠 https://hubs.li/Q038xx3k0 
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Multiple TV Platforms, One Codebase: React Native TV App Development | React Universe On Air #49

Tanner Linsley joins React Universe On Air to unpack the evolution of the TanStack ecosystem—from React Table and React Query to TanStack Router and the newest addition to the family, TanStack Start ✨

What started as internal tooling for Nozzle became a suite of libraries that shaped how developers think about server state, routing, and full-stack React apps. In this episode, Tanner shares the technical decisions behind building framework-agnostic, headless tools—and explains why client-side architecture still matters in a server-first world.

You’ll also hear why TanStack Start isn’t just another full-stack framework, how React Server Components could be treated like server state, and what’s coming next for TanStack Router.

If you're building React apps at scale or deciding how to modernize your frontend stack, don’t skip this one!

Check out episode resources on our website 🧠 https://bit.ly/41Z876l
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Sign up for Callstack newsletter ✉️  https://bit.ly/4lwS7QP
Follow us on X 🐦 https://twitter.com/callstackio

Chapters

00:00 Welcome to the React Universe
00:00 Introduction to Open Source and Server State
01:15 Meet our guest: Tanner Linsley
02:19 How Tanner got into programming
04:06 Early programming days when there was no React yet
05:41 Cross-platform beginnings
07:40 Open Source contributions
09:24 Working on Chart.js
14:12 React Table at Nozzle
16:58 How React Static started
20:53 React Query taking shape
27:53 Community reactions to React Query
33:18 Framework agnostic approach
36:26 Cross-platform frameworks comparison
37:56 Headless, type safety, and no dependencies
46:22 TanStack Router
01:00:59 TanStack Start
01:11:06 React Server Components
01:18:51 Wrap-up
01:20:29 React Universe Conf Speakers Announcement

TanStack Ecosystem with Tanner Linsley: React Query to TanStack Start | React Universe On Air #50

React Universe On Air is your go-to podcast about building cross-platform apps with React and React Native, featuring practical lessons, forward-looking ideas, and talks with industry leaders.

Mike Kelvin is the business analyst at Kellton

New tracks tagged #react native