Callstack
@callstack.com
We enable engineering teams to scale apps across mobile, web, and TV with React Native and our OSS. Hosts of @reactuniverseconf.com
Get to know us at www.callstack.com
Get to know us at www.callstack.com
Meta's $1.5M React Native competition for Meta Quest is on. Wondering what to build? @jwr.ski brainstormed 4 app ideas that go beyond 2D ports, from social to meditation apps. Get your inspiration (and tool suggestions) before you start coding ⬇️ clstk.com/3LiPQep
November 6, 2025 at 11:24 AM
Meta's $1.5M React Native competition for Meta Quest is on. Wondering what to build? @jwr.ski brainstormed 4 app ideas that go beyond 2D ports, from social to meditation apps. Get your inspiration (and tool suggestions) before you start coding ⬇️ clstk.com/3LiPQep
Tomorrow, we’re talking brownfield React Native with Zalando. We’ll cover how it fits into an existing native codebase, how to structure it, and what still feels awkward in practice.
Sign up for a live walkthrough & Q&A session 🎙️ clstk.com/3JIbisy
Sign up for a live walkthrough & Q&A session 🎙️ clstk.com/3JIbisy
November 4, 2025 at 6:17 AM
Tomorrow, we’re talking brownfield React Native with Zalando. We’ll cover how it fits into an existing native codebase, how to structure it, and what still feels awkward in practice.
Sign up for a live walkthrough & Q&A session 🎙️ clstk.com/3JIbisy
Sign up for a live walkthrough & Q&A session 🎙️ clstk.com/3JIbisy
Can you use your favorite Expo & React Native libraries on Meta Quest? Mostly, yes. But for key native features, you'll need specific alternatives.
@jwr.skiwrote a guide on what works, what doesn't, and what to use instead. Save yourself the guesswork and read it now ⬇️ clstk.com/4ojKhLh
@jwr.skiwrote a guide on what works, what doesn't, and what to use instead. Save yourself the guesswork and read it now ⬇️ clstk.com/4ojKhLh
October 30, 2025 at 3:55 PM
Can you use your favorite Expo & React Native libraries on Meta Quest? Mostly, yes. But for key native features, you'll need specific alternatives.
@jwr.skiwrote a guide on what works, what doesn't, and what to use instead. Save yourself the guesswork and read it now ⬇️ clstk.com/4ojKhLh
@jwr.skiwrote a guide on what works, what doesn't, and what to use instead. Save yourself the guesswork and read it now ⬇️ clstk.com/4ojKhLh
Reminder 📅 We’re hosting a live session on how React Native fits into an existing mobile app with native code and platform constraints. Expect a walkthrough of Zalando’s architecture, migration decisions, and dev experience solutions, plus time for live Q&A: clstk.com/3WZ0OrN
October 29, 2025 at 9:04 AM
Reminder 📅 We’re hosting a live session on how React Native fits into an existing mobile app with native code and platform constraints. Expect a walkthrough of Zalando’s architecture, migration decisions, and dev experience solutions, plus time for live Q&A: clstk.com/3WZ0OrN
Not all migration stories look the same. For the NFL app, greenfield made more sense than brownfield in 2018. The tech wasn’t there, and a ground-up rebuild made more sense from the business goals perspective.
Tune in to the episode for the full migration story clstk.com/4np2q9e
Tune in to the episode for the full migration story clstk.com/4np2q9e
October 27, 2025 at 11:06 AM
Not all migration stories look the same. For the NFL app, greenfield made more sense than brownfield in 2018. The tech wasn’t there, and a ground-up rebuild made more sense from the business goals perspective.
Tune in to the episode for the full migration story clstk.com/4np2q9e
Tune in to the episode for the full migration story clstk.com/4np2q9e
Zalando is integrating React Native into a large production app using a brownfield setup.
On Nov 5, we’ll team up to share how their engineers are handling interop, dev experience, and gradual migration.
🕔 5PM CET
🎙 Sign up to join the live session at clstk.com/3L8wici
On Nov 5, we’ll team up to share how their engineers are handling interop, dev experience, and gradual migration.
🕔 5PM CET
🎙 Sign up to join the live session at clstk.com/3L8wici
October 23, 2025 at 12:54 PM
Zalando is integrating React Native into a large production app using a brownfield setup.
On Nov 5, we’ll team up to share how their engineers are handling interop, dev experience, and gradual migration.
🕔 5PM CET
🎙 Sign up to join the live session at clstk.com/3L8wici
On Nov 5, we’ll team up to share how their engineers are handling interop, dev experience, and gradual migration.
🕔 5PM CET
🎙 Sign up to join the live session at clstk.com/3L8wici
What does it take to keep NFL fans connected on every screen (iPhones, Xboxes, TVs, and more) every game day? @grabbou.com chats with Michael Blanchard (Director of Engineering at #NFL) about scaling React Native across every surface. Set a reminder for the premiere on October 14 📅
October 10, 2025 at 9:13 AM
What does it take to keep NFL fans connected on every screen (iPhones, Xboxes, TVs, and more) every game day? @grabbou.com chats with Michael Blanchard (Director of Engineering at #NFL) about scaling React Native across every surface. Set a reminder for the premiere on October 14 📅
We just launched a new React Native showcase for Meta Quest VR 🚀
Our demo on Horizon OS features camera, audio, and fluid navigation powered by popular libraries. It proves you can use existing mobile skills to build high-performance VR experiences.
Read the full story by @jwr.ski on our blog ⬇️
Our demo on Horizon OS features camera, audio, and fluid navigation powered by popular libraries. It proves you can use existing mobile skills to build high-performance VR experiences.
Read the full story by @jwr.ski on our blog ⬇️
October 8, 2025 at 12:39 PM
We just launched a new React Native showcase for Meta Quest VR 🚀
Our demo on Horizon OS features camera, audio, and fluid navigation powered by popular libraries. It proves you can use existing mobile skills to build high-performance VR experiences.
Read the full story by @jwr.ski on our blog ⬇️
Our demo on Horizon OS features camera, audio, and fluid navigation powered by popular libraries. It proves you can use existing mobile skills to build high-performance VR experiences.
Read the full story by @jwr.ski on our blog ⬇️
At React Conf this week? Let's talk about the future of the ecosystem.
The Callstack team is just outside the Casablanca Ballroom. Drop by to discuss where React is heading and take our React Maturity Survey to see how your app can lead the way.
The Callstack team is just outside the Casablanca Ballroom. Drop by to discuss where React is heading and take our React Maturity Survey to see how your app can lead the way.
October 7, 2025 at 8:32 PM
At React Conf this week? Let's talk about the future of the ecosystem.
The Callstack team is just outside the Casablanca Ballroom. Drop by to discuss where React is heading and take our React Maturity Survey to see how your app can lead the way.
The Callstack team is just outside the Casablanca Ballroom. Drop by to discuss where React is heading and take our React Maturity Survey to see how your app can lead the way.
The future of React and React Native is now stewarded by the new React Foundation and Callstack is a founding member.This milestone ensures the long-term stability of the core infrastructure and a neutral, collaborative home for the ecosystem you rely on.
Press releases below ⬇️
Press releases below ⬇️
October 7, 2025 at 5:38 PM
The future of React and React Native is now stewarded by the new React Foundation and Callstack is a founding member.This milestone ensures the long-term stability of the core infrastructure and a neutral, collaborative home for the ecosystem you rely on.
Press releases below ⬇️
Press releases below ⬇️
At @reactuniverseconf.com, @lukasz.app talked with Joel Arvidsson, @jayz.us, and Thibault Malbranche. They covered React Native stability desktop apps, tooling gaps, and what 1.0 should mean.
Watch and explore show notes at clstk.com/48uIpKi
Watch and explore show notes at clstk.com/48uIpKi
September 19, 2025 at 12:02 PM
At @reactuniverseconf.com, @lukasz.app talked with Joel Arvidsson, @jayz.us, and Thibault Malbranche. They covered React Native stability desktop apps, tooling gaps, and what 1.0 should mean.
Watch and explore show notes at clstk.com/48uIpKi
Watch and explore show notes at clstk.com/48uIpKi
You tested it, it passed, it shipped. But is your app really working for users?
Observability isn't a luxury; it's the feedback loop your app depends on.
In the latest podcast episode, we discuss spans, logs, metrics, real user monitoring, and all things observability and OpenTelemetry-related 👇
Observability isn't a luxury; it's the feedback loop your app depends on.
In the latest podcast episode, we discuss spans, logs, metrics, real user monitoring, and all things observability and OpenTelemetry-related 👇
August 22, 2025 at 6:29 AM
You tested it, it passed, it shipped. But is your app really working for users?
Observability isn't a luxury; it's the feedback loop your app depends on.
In the latest podcast episode, we discuss spans, logs, metrics, real user monitoring, and all things observability and OpenTelemetry-related 👇
Observability isn't a luxury; it's the feedback loop your app depends on.
In the latest podcast episode, we discuss spans, logs, metrics, real user monitoring, and all things observability and OpenTelemetry-related 👇
The @reactuniverseconf.com vibes start early this year. On Sept 2, we’re hosting the AI Meetup organized by Callstack, sponsored by @vercel.com 🎤
Expect an evening of talks, live demos, and networking before the conference even begins. Seats are limited. Save your spot below 👇
Expect an evening of talks, live demos, and networking before the conference even begins. Seats are limited. Save your spot below 👇
August 19, 2025 at 12:40 PM
The @reactuniverseconf.com vibes start early this year. On Sept 2, we’re hosting the AI Meetup organized by Callstack, sponsored by @vercel.com 🎤
Expect an evening of talks, live demos, and networking before the conference even begins. Seats are limited. Save your spot below 👇
Expect an evening of talks, live demos, and networking before the conference even begins. Seats are limited. Save your spot below 👇
What’s still unsolved in React Native observability? @lukasz.app, Embrace’s Jonathan Munz and Adam Horodyski have thoughts and some answers.
Catch the new React Universe On Air episode premiere on YouTube on August 13 📅 youtu.be/DpHza-0R0mg
Catch the new React Universe On Air episode premiere on YouTube on August 13 📅 youtu.be/DpHza-0R0mg
August 11, 2025 at 7:38 AM
What’s still unsolved in React Native observability? @lukasz.app, Embrace’s Jonathan Munz and Adam Horodyski have thoughts and some answers.
Catch the new React Universe On Air episode premiere on YouTube on August 13 📅 youtu.be/DpHza-0R0mg
Catch the new React Universe On Air episode premiere on YouTube on August 13 📅 youtu.be/DpHza-0R0mg
Start small, scale smart.
On Aug 5, @grabbou.com & Keith Kurak will walk you through how to:
🧩 Start @expo.dev adoption with just 1 module
🚀 Add EAS Build, OTA updates, Router when it *actually* makes sense
🛑 Avoid common migration traps
Register at clstk.com/44T6WFu
On Aug 5, @grabbou.com & Keith Kurak will walk you through how to:
🧩 Start @expo.dev adoption with just 1 module
🚀 Add EAS Build, OTA updates, Router when it *actually* makes sense
🛑 Avoid common migration traps
Register at clstk.com/44T6WFu
July 29, 2025 at 9:42 AM
Start small, scale smart.
On Aug 5, @grabbou.com & Keith Kurak will walk you through how to:
🧩 Start @expo.dev adoption with just 1 module
🚀 Add EAS Build, OTA updates, Router when it *actually* makes sense
🛑 Avoid common migration traps
Register at clstk.com/44T6WFu
On Aug 5, @grabbou.com & Keith Kurak will walk you through how to:
🧩 Start @expo.dev adoption with just 1 module
🚀 Add EAS Build, OTA updates, Router when it *actually* makes sense
🛑 Avoid common migration traps
Register at clstk.com/44T6WFu
Thinking of adopting Expo in a React Native project but not sure how to get started without breaking things?
Callstack’s @grabbou.com and @expo.dev’s Keith Kurak will show you how to migrate from RN CLI to Expo one step at a time.
Sign up for the webinar & bring your questions 📅 clstk.com/4f4Bxou
Callstack’s @grabbou.com and @expo.dev’s Keith Kurak will show you how to migrate from RN CLI to Expo one step at a time.
Sign up for the webinar & bring your questions 📅 clstk.com/4f4Bxou
July 25, 2025 at 11:21 AM
Thinking of adopting Expo in a React Native project but not sure how to get started without breaking things?
Callstack’s @grabbou.com and @expo.dev’s Keith Kurak will show you how to migrate from RN CLI to Expo one step at a time.
Sign up for the webinar & bring your questions 📅 clstk.com/4f4Bxou
Callstack’s @grabbou.com and @expo.dev’s Keith Kurak will show you how to migrate from RN CLI to Expo one step at a time.
Sign up for the webinar & bring your questions 📅 clstk.com/4f4Bxou
Better React Native starts like a good meal kit: clear recipe, quality ingredients, zero guesswork.
We trained 15 HelloFresh engineers in 8 weeks, resulting in faster delivery and a reusable onboarding playbook.
Dig into the case study 👉 clstk.com/4kRmQX5
We trained 15 HelloFresh engineers in 8 weeks, resulting in faster delivery and a reusable onboarding playbook.
Dig into the case study 👉 clstk.com/4kRmQX5
July 25, 2025 at 6:11 AM
Better React Native starts like a good meal kit: clear recipe, quality ingredients, zero guesswork.
We trained 15 HelloFresh engineers in 8 weeks, resulting in faster delivery and a reusable onboarding playbook.
Dig into the case study 👉 clstk.com/4kRmQX5
We trained 15 HelloFresh engineers in 8 weeks, resulting in faster delivery and a reusable onboarding playbook.
Dig into the case study 👉 clstk.com/4kRmQX5
Step-by-step, code-first, and written by the devs who built the tooling.
Our new ebook is your guide to integrating React Native into native apps in a modular, gradual, and production-ready way
Includes:
✅ Packaging configs
✅ XCFrameworks & AARs
✅ Brownfield best practices
Read it now 👇
Our new ebook is your guide to integrating React Native into native apps in a modular, gradual, and production-ready way
Includes:
✅ Packaging configs
✅ XCFrameworks & AARs
✅ Brownfield best practices
Read it now 👇
July 22, 2025 at 10:39 AM
Step-by-step, code-first, and written by the devs who built the tooling.
Our new ebook is your guide to integrating React Native into native apps in a modular, gradual, and production-ready way
Includes:
✅ Packaging configs
✅ XCFrameworks & AARs
✅ Brownfield best practices
Read it now 👇
Our new ebook is your guide to integrating React Native into native apps in a modular, gradual, and production-ready way
Includes:
✅ Packaging configs
✅ XCFrameworks & AARs
✅ Brownfield best practices
Read it now 👇
Want to write your first cross-ecosystem native module? @shirakaba.bsky.social shares how to use Node-API to create a native module that runs not only on Node.js, but React Native, too clstk.com/3INHNVm
July 17, 2025 at 12:51 PM
Want to write your first cross-ecosystem native module? @shirakaba.bsky.social shares how to use Node-API to create a native module that runs not only on Node.js, but React Native, too clstk.com/3INHNVm
Monorepos can be intimidating. Thousands of files, tangled dependencies, CI times that never end… But what if they could feel like a piece of cake?
In our next episode, Jordan Powell (Nx) shows how smart tooling makes monorepos scalable and actually pleasant to work in 👉 youtu.be/9OqzGMWHZTA
In our next episode, Jordan Powell (Nx) shows how smart tooling makes monorepos scalable and actually pleasant to work in 👉 youtu.be/9OqzGMWHZTA
July 14, 2025 at 12:28 PM
Monorepos can be intimidating. Thousands of files, tangled dependencies, CI times that never end… But what if they could feel like a piece of cake?
In our next episode, Jordan Powell (Nx) shows how smart tooling makes monorepos scalable and actually pleasant to work in 👉 youtu.be/9OqzGMWHZTA
In our next episode, Jordan Powell (Nx) shows how smart tooling makes monorepos scalable and actually pleasant to work in 👉 youtu.be/9OqzGMWHZTA
We’re going live on July 15 to show how Node-API powers native modules in React Native, without platform-specific hacks. Join @lukasz.app, @kraenhansen.dk, and MariuszPasiński at 5PM CEST 👉 clstk.com/3Uamb80
July 11, 2025 at 12:28 PM
We’re going live on July 15 to show how Node-API powers native modules in React Native, without platform-specific hacks. Join @lukasz.app, @kraenhansen.dk, and MariuszPasiński at 5PM CEST 👉 clstk.com/3Uamb80
QA and devs, testing the same PR at the same time? React Native Enterprise Framework makes it real.
Skip CocoaPods, share builds, tighten feedback loops 💅
Catch the full podcast episode here ➡️ clstk.com/3GBnTMK
Skip CocoaPods, share builds, tighten feedback loops 💅
Catch the full podcast episode here ➡️ clstk.com/3GBnTMK
July 11, 2025 at 9:23 AM
QA and devs, testing the same PR at the same time? React Native Enterprise Framework makes it real.
Skip CocoaPods, share builds, tighten feedback loops 💅
Catch the full podcast episode here ➡️ clstk.com/3GBnTMK
Skip CocoaPods, share builds, tighten feedback loops 💅
Catch the full podcast episode here ➡️ clstk.com/3GBnTMK
Check out @grabbou.com talk on building federated mobile apps with React Native and Re.Pack.
Dynamic UIs, async code loading, real SDK isolation.
Watch the full breakdown of what makes a super app… super 🎥 clstk.com/3SHKQjV
Dynamic UIs, async code loading, real SDK isolation.
Watch the full breakdown of what makes a super app… super 🎥 clstk.com/3SHKQjV
July 3, 2025 at 8:44 AM
Check out @grabbou.com talk on building federated mobile apps with React Native and Re.Pack.
Dynamic UIs, async code loading, real SDK isolation.
Watch the full breakdown of what makes a super app… super 🎥 clstk.com/3SHKQjV
Dynamic UIs, async code loading, real SDK isolation.
Watch the full breakdown of what makes a super app… super 🎥 clstk.com/3SHKQjV
Thanks for filling up the room yesterday, everyone — despite the full-blown summertime weather in NYC. 🌴 It was awesome to host you! ❤️🔥
Today ➡️ @vercel Ship.
Today ➡️ @vercel Ship.
June 25, 2025 at 1:12 PM
Thanks for filling up the room yesterday, everyone — despite the full-blown summertime weather in NYC. 🌴 It was awesome to host you! ❤️🔥
Today ➡️ @vercel Ship.
Today ➡️ @vercel Ship.
Who are we seeing in NYC? Let us know you're coming!
Tuesday, June 24, 2025
6:00 – 9:00 PM (EDT)
The Farm SoHo, 447 Broadway, 2nd Floor, New York
RSVP: clstk.com/4dRBJ9P
Tuesday, June 24, 2025
6:00 – 9:00 PM (EDT)
The Farm SoHo, 447 Broadway, 2nd Floor, New York
RSVP: clstk.com/4dRBJ9P
June 9, 2025 at 4:28 PM
Who are we seeing in NYC? Let us know you're coming!
Tuesday, June 24, 2025
6:00 – 9:00 PM (EDT)
The Farm SoHo, 447 Broadway, 2nd Floor, New York
RSVP: clstk.com/4dRBJ9P
Tuesday, June 24, 2025
6:00 – 9:00 PM (EDT)
The Farm SoHo, 447 Broadway, 2nd Floor, New York
RSVP: clstk.com/4dRBJ9P