App.js Conf ‘25

Expo on Orbit

How SpaceX is using React Native and Expo to enable lean teams to deliver results—serving users across the globe and beyond.

Life After Legacy: The New Architecture Future

The New React Native Architecture has been enabled by default for several months now, and we're excited to see how it's being used. Now what? What is going to happen to Legacy Architecture? In this talk, we'll take a deep dive into the world beyond Legacy Architecture. We'll explore what are the benefits of dropping the old code, what’s our plan to sunset the Legacy Architecture, and share our roadmap for a seamless transition to the new era of React Native.

Legend List: Optimizing for Peak List Performance

Legend List makes React Native lists much faster while enabling bidirectional infinite lists and better chat UIs. We'll explore the performance improvements, the tradeoffs of recycling, and how we can render infinitely long dynamic chat UIs without any compromises. We'll dive into the key optimizations behind its speed and how they work, so that you can apply them to your own apps and libraries.

Mozart Never Had React Native: You Do

In this talk, we’ll share how you can use new tools like `expo-audio` and `react-native-audio-api` to unleash the untapped power of sounds in React Native apps. Whether you’re building a meditation app, a game or just looking to elevate your app’s UX, we’ll provide practical techniques to make your apps sound as good as it looks!

Radon IDE - Code with Glee

Radon IDE is the next step in development tools for React Native and Expo developers. It integrates directly into VS Code and Cursor, aiming to provide a seamless and focused development experience. In this talk, we’ll go over the latest updates to Radon, explore how real debugging tools can save you from endless console.log statements, and share a preview of the features we’re working on next.

WebGPU === High performant 3D animations in React Native

Efficient 3D graphics in React Native is now possible thanks to WebGPU, and it’s an opportunity you don't want to miss. While you may think of GPU as something challenging to handle, WebGPU, combined with tools like Three.js, Reanimated, and Worklets, makes breaking limits and achieving previously impossible become a reality. If you're constantly seeking opportunities to make your app stand out and offer an unmatched, unique experience for your users, then this talk is for you.

Scaling Enterprise CI/CD: A Migration Success Story

From legacy CI/CD infrastructure to lightning-fast Expo EAS: discover how we transformed our enterprise React Native build system while dramatically reducing both build times and infrastructure costs. This talk walks through our journey integrating Expo EAS with GitHub Actions, and creating a modern native app workflow that scales with development needs. You'll leave with practical strategies for migrating complex build systems, optimizing CI/CD performance, and measuring the real impact on developer productivity.

The Next Evolution of the Party Invite is an App Clip

Hear about Partiful's journey in building the modern day party invite, and how they leveraged App Clips to break through conventional app boundaries to reach a wider audience.

The Bigger Picture

In today’s React Native development landscape, we are no longer building for just mobile. We have the capability to develop for web, automotive, VR and TV. While each platform presents unique challenges developing for the fragmented landscape of TV experiences, in particular, requires balancing consistent app performance across platforms & devices while optimizing for each one’s specific requirements.

Running Small Language Models on Your Phone: Bringing AI to Mobile with React Native and ExecuTorch

LLMs are powerful—but also too large and resource-intensive. In this talk, you’ll learn how these models work, how they’re being optimised into smaller, more efficient SLMs, and why that’s a game-changer for mobile development. We’ll explore the benefits of Edge AI—like privacy, lower latency, and offline support—and walk through how to integrate on-device conversational AI into a React Native app using ExecuTorch.

Building React Native Apps with Premium Feel and Quality UX

Learn practical React Native techniques to instill a 'premium feel' across the entire user journey. We'll cover implementing polished animations and intuitive gestures, designing effective navigation patterns, optimizing perceived performance, and utilizing haptics meaningfully. Discover strategic considerations for crucial touchpoints like onboarding flows and how/when to present information like sign-up or subscription options. Gain actionable insights from top-tier apps to significantly boost your app's overall quality and user satisfaction.