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

In June, we released stable Reassure v1.0.0. It’s big news for performance-oriented teams, so we just couldn’t help ourselves but record an entire Coffee Talk about that!

To give you the most comprehensive insight into what’s new in the performance testing companion for React and React Native, Kuba invited the team behind it: Maciej Jastrzębski and Adam Horodyski. Together, they delve into what Reassure is, its uses, how to integrate it, and how it can benefit projects from both a development and business perspective. The episode also touches on the technical details of the tool, the importance of performance testing, and calls for your help. Yes, you read it right, we welcome community contributions to further enhance Reassure!

Check out this episode’s resources 📚 https://hubs.li/Q02GWgcc0 

Share your feedback on this episode ✨ https://forms.gle/MZNz8xbt64KoD1LC7 

Buy ticket to React Universe Conf 2024 🎟 https://hubs.li/Q02F_wGs0 

Check out other episodes of our podcast 🎧 https://hubs.li/Q02F_wGG0 

Download The Ultimate Guide to React Native Optimization 2024 📖 https://hubs.li/Q02F_wJ70 

Follow us on Twitter 🐦 https://twitter.com/callstackio

What’s New in Reassure 1.0 | React Universe On Air: Coffee Talk #20

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

In this short special, we want to give you a better understanding of the whys and how behind the rebranding of Callstack’s podcast. We got Łukasz and Kuba together in the studio to reflect on:
💜 the evolution of the show since its inception in July 2020, 
💜 the changes in format over the years, 
💜 the impactful guests who have been part of this journey,
💜 the changes that await you as we become React Universe On Air. 

Let’s say we’re opening a new chapter in the history of the good old podcast you knew - and we can’t wait for you to write it with us!

Buy ticket to React Universe Conf 2024 🎟 https://hubs.li/Q02Kn7yf0 

Check out other episodes of our podcast 🎧 https://hubs.li/Q02Kn7xj0 

Sign up for our newsletter for developers and tech leaders 📧 https://hubs.li/Q02Kn7xl0 

Follow us on Twitter 🐦 https://twitter.com/callstackio

We’re Changing Into React Universe On Air | React Universe On Air Special

Why settle for flat graphics, when you can see the React Universe in 3D? In this Coffee Talk, Jakub invited three very special guests to dig deep into the topic of 3D rendering in React and React Native:
💜 Chris Baumgartner -  Maintainer at Poimandres Dev Collective
💜 Cody Bennett - Graphics Engineer at Encube
💜 Mario Pasiński - Callstak’s developer involved in bringing 3D rendering to React Native VisionOS

In their discussion, Jakub and his guests discuss the role of 3D in modern applications (going beyond games) and how this specific ecosystem is evolving. They also share practical tips for developers looking to incorporate 3D elements into their applications, from answering the question of whether you actually need to be good at math to do 3D to covering key libraries like React Three Fiber, Three.js, or Babylon.js. You can also expect a deep dive into what WebGPU and WebGL have to offer now, as well as what the future will bring for them and the entire 3D realm.

Share your feedback on this episode ✨ https://bit.ly/ct21feedback 

Check out episode resources on our website 🧠 https://hubs.li/Q02R2fx00 
Check out other episodes of our podcast 🎧 https://hubs.li/Q02Q4nGH0 
Sign up to receive curated content for tech leaders and developers ✉️  https://hubs.li/Q02Q4nGQ0 
Follow us on Twitter 🐦 https://twitter.com/callstackio

How to Get Started With 3D in React | React Universe On Air: Coffee Talk #21

What is this, a crossover episode? You bet! React Universe On Air is joining forces with React Native Radio once again to help you navigate App Center’s retirement.

In March 2024, Microsoft announced the sunset of App Center in 12 months. Bearing in mind how big of a deal CodePush is for React Native applications, it’s a radical change for developers and businesses alike. We’re releasing this episode six months before it actually takes place because it’s high time you started planning migration (if you haven’t already).

In this episode, we discuss the impact of App Center's sunsetting on businesses, explore the best alternatives, and provide actionable insights on how to prepare for the transition. And since our focus is the React Native ecosystem, Łukasz Chludziński and Mazen Chami invited a very special guest: Quinlan Jung from Expo. Together, they talk about:
💜 the meaning of App Center retirement
💜 community reception of this piece of news
💜 most frequently used App Center’s functionalities and their replacements
💜 how Expo Application Services fit the picture
💜 migration tips for businesses, especially enterprises

Check out episode resources on our website 🧠 https://hubs.li/Q02Vr44t0 
Share your feedback on this episode ✨ https://bit.ly/ep43feedback 
Check out other episodes of our podcast 🎧 https://hubs.li/Q02VgpsK0 
Sign up to receive curated content for tech leaders and developers ✉️  https://hubs.li/Q02Vgpsd0 
Follow us on Twitter 🐦 https://twitter.com/callstackio

How to Handle App Center Retirement | React Universe On Air #43

Grab your coffee, sit back, and tune in to the 23rd Coffee Talk episode, where we break down Next.js 15 and the updates it brings to the table. This time, Ola and Łukasz are joined by Szymon Chmal, and together, they spill the beans on React 19 support, caching, Turbopack, Server Actions security, and more!

Check out episode resources on our website 🧠 https://hubs.li/Q02WX9fc0 

Share your feedback on this episode ✨ https://bit.ly/ct23feedback 
Check out other episodes of our podcast 🎧 https://hubs.li/Q02WX6NP0 
Sign up to receive curated content for tech leaders and developers ✉️  https://hubs.li/Q02WX6_x0 
Follow us on Twitter 🐦 https://twitter.com/callstackio

What’s New in Next.js 15 | React Universe On Air: Coffee Talk #23

In this episode, Kuba is joined by Kewin, a member of Callstack’s AI team at the R&D Department and the co-creator of Cassandra. Together, they talk about everything you need to know about building a custom AI assistant, from why we chose OpenAI’s ChatGPT to the challenges faced and solutions devised to craft a functional and efficient internal chatbot. They also share some interesting insights about the considerations for performance and security, as well as the future of AI in workplace management.

Check out episode resources on our website 🧠 https://hubs.li/Q02Yv4ZK0 
Share your feedback on this episode ✨ https://bit.ly/ct24feedback 
Let us know what you think of Callstack 📄 https://hubs.li/Q02Zjv9X0

Check out other episodes of our podcast 🎧 https:​//hubs.li/Q02ZjQH80
Sign up for Callstack newsletters ✉️  https://hubs.li/Q02Yv4XJ0   
Follow us on Twitter 🐦 https://twitter.com/callstackio

Building a Custom AI Assistant for Your Business | React Universe On Air: Coffee Talk #24

In this episode of the React Universe On Air podcast, Ola has invited Krzysztof Magiera, 
the Director of Engineering at Software Mansion, to talk about Radon IDE and why it can be considered a game-changer for React Native developers. Their conversation revolves around:
➡️ the challenges of the available React Native tooling, 
➡️ what made Krzysztof start working on Radon IDE,
➡️ how community feedback contributed to what the tool is today,
➡️ the key features of Radon IDE, and how they improve developer velocity and productivity.

Check out episode resources on our website 🧠 https://hubs.li/Q02ZVm8Z0 
Share your feedback on this episode ✨ https://bit.ly/ep44feedback 
Check out other episodes of our podcast 🎧 https://hubs.li/Q02ZVm030 
Sign up for Callstack newsletters ✉️  https://hubs.li/Q02ZVm040   
Follow us on Twitter 🐦 https://twitter.com/callstackio  


Radon IDE: Better Developer Experience for React Native Teams | React Universe On Air #44

In this episode, we’re taking a closer look at two solutions that can redefine how we
build universal React Native apps: DOM Components and React Server Components. They promise faster and better development—think low-latency interactions, offline capabilities, and the flexibility to scale effortlessly. If you're looking to future-proof your team's workflow and deliver apps that delight users regardless of the platform, this is a must-listen.

To discuss DOM & React Server Components in detail, Łukasz invited Evan Bacon, the creator of Expo Router and Engineering Manager at Expo. Throughout the episode, Evan shares his expertise and journey in creating tools like DOM Components, which enable developers to integrate web code seamlessly into React Native apps, and React Server Components, simplifying server-driven rendering for mobile applications.

Check out episode resources on our website 🧠 https://hubs.li/Q030XWL_0 
Share your feedback on this episode ✨ https://bit.ly/fdbck45 
Get your React Universe Conf 2025 tickets 🎟 https://hubs.li/Q030XWT40 
Check out other episodes of our podcast 🎧 https://hubs.li/Q030XWMz0 
Sign up for Callstack newsletters ✉️  https://hubs.li/Q030XWLD0   
Follow us on X 🐦 https://twitter.com/callstackio  


Universal React Native Apps with DOM and React Server Components | React Universe On Air #45

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 

Share your feedback on this episode ✨ https://bit.ly/feedback46 
Get your React Universe Conf 2025 tickets 🎟 https://hubs.li/Q030Y5mp0 

Check out other episodes of our podcast 🎧 https://hubs.li/Q031_Qmf0 
Follow us on X 🐦 https://twitter.com/callstackio

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

Is rewriting your native app really the only way to go cross-platform?

In this Coffee Talk episode, we explore how React Native Brownfield offers a smarter path forward.

Łukasz Chludziński invites Oskar Kwaśniewski and Burak Güner—who work directly on React Native Core and brownfield tooling—to discuss how recent advances in React Native have made brownfield integration far more viable, stable, and scalable.

You’ll learn:
➡️ Why brownfield isn’t what it used to be (goodbye, brittle bridging)
➡️ How `RootViewFactory` and `ReactNativeFactory` APIs simplify setup
➡️ What’s new in React Native Brownfield 1.0.0
➡️ How to keep your architecture clean while integrating React Native
➡️ What this means for modern native stacks like SwiftUI, Jetpack Compose—and future-facing platforms like visionOS

Whether you’re maintaining a legacy app or building for what's next, this episode gives you a blueprint for hybrid success.

Explore React Native Brownfield 🙌 https://github.com/callstack/react-native-brownfield
Check out episode resources on our website 📚 https://bit.ly/3ESW3Lf
Catch more React Universe On Air episodes 🎧 https://bit.ly/44A0q8q

Get your React Universe Conf 2025 tickets 🎟 https://hubs.li/Q03l-47N0
Sign up for our newsletter ✉️ https://bit.ly/3H2xsE6
Follow us on X 🐦 https://x.com/callstackio    

Timestamps
00:00 Welcome to the React Universe
02:00 Meet our guests: Oskar & Burak
02:50 Let’s talk brownfield app development
03:37 Craziest brownfield setups our guests have seen
08:19 Greenfield vs. brownfield React Native
14:14 How we used to approach brownfield development
18:20 Callstack’s React Native Brownfield
23:30 RootView Factory & React Native Factory
28:50 New Features in React Native Brownfield 1.0
35:35 Sharing data between native and JavaScript
41:00 How about using different React Native versions
43:30  Cost of complexity
47:00 Learn more and get in touch with our guests

You Don’t Need a Rewrite, You Need React Native Brownfield | React Universe On Air Coffee Talk #27

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.

New tracks tagged #react native podcast