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.

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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.

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React Native FastIO: Nitro-Powered Performance Boost | React Universe On Air: Coffee Talk #25 by Callstack

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.

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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.

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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!

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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

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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

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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.

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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.

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