Callstack
Helping teams ship better cross-platform apps, with React, React Native, and Open Source at the core.
We’re Callstack: Open Source contributors, core contributors to React Native, and active members of the community pushing the React Universe forward.
Here you’ll find what we live and breathe every day:
Podcast 🎙️ React Universe On Air, with insights from across the React ecosystem
Event Recordings 🎥 Livestreams, talks, and behind-the-scenes from React Universe Conf & React Conf
Tutorials 📚 Hands-on guides and deep dives into React and React Native
Webinars ⚙️ Technical sessions on building full-stack, cross-platform apps
If you’re into building better apps, scaling real products, and being part of a global community that shares what it knows—you’re in the right place.
Your Android React Native App Is Big Because It's Missing This One Setting
Build Faster and Smarter With React Native Enterprise Framework | React Universe On Air
Building Universal Super Apps With React & React Native | Codeaholics Meetup, May 2025
Welcome New Speakers
You’re Loading Too Much Unnecessary Hermes Polyfills
Native Apps Without a Build Step by Michal Pierzchala | React Universe Meetup, April 2025
User-Focused Performance Tracking by Tim Golen | React Universe Meetup, April 2025
Tips & Tricks From the Ultimate Guide to RN Optimization 2025 by Oskar Kwaśniewski
Auto Memoization in React Native? React Compiler Has You Covered
Adding React Native to iOS and Android Apps Has Never Been Easier
{Webinar} From Hours to Minutes: Making Your React Native CI Builds 20x Faster
You Don’t Need a Rewrite, You Need React Native Brownfield | React Universe On Air Coffee Talk #27
{Webinar} Master JavaScript Performance in React Native (Part 2)
Bring Your Favorite Language to React Native by Robert Pasiński | React Universe Meetup, April 2025
I Built a File-Based Router for React Native by Szymon Chmal | React Universe Meetup, April 2025
Make Your React (Native) App Feel Native by Oskar Kwaśniewski | React Universe Meetup, April 2025
{Webinar} Master JavaScript Performance in React Native (Part 1)
{Webinar} Why You Need React Native Enterprise Framework
Tanner Linsley Talks TanStack Ecosystem | React Universe On Air #50
React Universe Conf 2025 First Speakers
How Definitely Typed Changed TypeScript Forever | React Universe On Air #26
{Webinar} Using React Native in Existing Apps for Faster Cross-Platform Features
React Universe Conf 2024 Aftermovie
TV App Development With React Native Is Not Just Mobile, But Bigger | React Universe On Air #49
Reanimated 4 is the Future of Smooth React Native Animations | React Universe On Air #48
Become a Sponsor at React Universe Conf 2025
Mobile Microfrontends With Zephyr Cloud and Re.Pack | React Universe On Air #47
How to Set Up AI Assistant in Slack
Lessons from Shopify's Migration to React Native with Mustafa Ali | React Universe On Air #46
Evan Bacon on Universal React Native Apps, DOM & React Server Components | React Universe On Air #45