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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

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07.11.2024
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Latest posts by Callstack @callstack.com

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Use React Native to Navigate the Fragmented TV Ecosystem | Callstack Explore the living-room landscape with a comprehensive guide to React Native TV app development. Learn how platforms differ, how to design remote-friendly interfaces, how to manage focus and navigatio...

Download you copy of the guide here πŸ‘‰ clstk.com/4b2QC8a β”‚

04.03.2026 11:50 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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On TV, focus is the UX. If D-pad navigation jumps, traps focus, or behaves differently per platform, the app feels broken. Our TV guide explains how to manage focus in React Native TV using focus guides and platform-specific rules.
Get your copy ⬇️ Link in the comments ⬇️

04.03.2026 11:48 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Full house in WrocΕ‚aw!

The Callstack x @vercel.com AI SDK Meetup kicks off at 6:00 PM with talks on safe AI execution, real commerce built with Claude, and production-ready agents.

If you’re joining, see you there πŸ‘‹

03.03.2026 10:42 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Building a Video Experience with React Native: Lessons from Early Adoption | Callstack How Zalando built a custom Fabric video player, reduced jank, and optimized autoplay time in a production React Native app.

Building video in React Native at scale:

πŸ”ΉCustom Fabric component.
πŸ”ΉJank reduced from 24% β†’ 3%.
πŸ”ΉAutoplay optimizations.

Watch production lessons from React Universe Meetup x @zalando.com by Eugene Verichev now πŸ‘‡
clstk.com/4rJG1pX

02.03.2026 11:18 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Sparkling: The Missing App Layer for Lynx.js A hands-on look at Sparkling for Lynx.js: CLI, native navigation, and the tooling layer that turns Lynx into a full mobile app framework.

Read the article here ➑️ [https://clstk.com/4sbX0Rs](clstk.com/4sbX0Rs)

27.02.2026 17:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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What does a freshly generated Sparkling app actually give you?

πŸ”ΈFull Android & iOS projects
πŸ”ΈMulti-bundle Lynx entries
πŸ”ΈNative, scheme-driven navigation
πŸ”ΈAutolinking + typed APIs

We walked through the setup and tested the workflow. Read the article ⬇️ Link in the comments ⬇️

27.02.2026 17:40 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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React Native Brownfield v3 with Expo Config Plugin Use React Native Brownfield v3 and Expo to migrate native apps incrementally with artifact-based integration for iOS and Android.

Read the full article ⬇️

clstk.com/3ZXpd2G

26.02.2026 15:02 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Introducing React Native Brownfield v3 with Expo Config Plugin.

There’s never been a better time to migrate your legacy native stack to Expo.

Start in minutest using our battle-tested library ⬇️

26.02.2026 15:01 πŸ‘ 3 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Use React Native to Navigate the Fragmented TV Ecosystem | Callstack Explore the living-room landscape with a comprehensive guide to React Native TV app development. Learn how platforms differ, how to design remote-friendly interfaces, how to manage focus and navigatio...

Grab your copy for free πŸ“– clstk.com/47e94JZ

26.02.2026 13:32 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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TV turns simple CI into a matrix.

One app becomes multiple builds, test runs, signing steps, and packages across tvOS and Android TV. Without proper CI/CD, releases slow to a crawl.

This guide shows how to keep TV shipping sane ⬇️

26.02.2026 13:31 πŸ‘ 1 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Callstack x Vercel AI SDK Meetup | Callstack Join the Callstack x Vercel AI SDK Meetup in WrocΕ‚aw on March 4, 2026. Practical talks on building secure, production-ready AI apps.

Last moment to save your spot ➑️ [https://clstk.com/4kRrGVI](clstk.com/4kRrGVI)

25.02.2026 15:58 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Only a few spots left!

On March 4 in WrocΕ‚aw, we’re meeting for the Callstack x @vercel.com AI SDK Meetup. It’s a chance to learn how others are shipping AI to production and to meet peers working on similar problems.

Join Dom, @zaiste.net, @typeofweb.com & @chmal.it!

Save your spot now ⬇️

25.02.2026 15:57 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Testing TV apps isn’t just β€œmobile testing on a bigger screen.” Remote input, focus movement, and platform differences need dedicated tests, and our Ultimate Guide to React Native TV Development lays out a practical testing strategy for tvOS and Android TV.
Download it now ➑️ clstk.com/4bXcqV4

19.02.2026 11:14 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Agent Device: iOS & Android Automation for AI Agents Agent Device is a lightweight CLI for AI-driven mobile automation on iOS and Android, with structured snapshots and deterministic replay.

Learn more ⬇️ clstk.com/4kCOSqC

17.02.2026 16:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Your agents can now "see" and "touch" their generated outcomes directly on iOS and Android devices.

Β» npx agent-device

Read more πŸ‘‡ Link in the comments πŸ‘‡

17.02.2026 16:27 πŸ‘ 2 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
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Now live πŸ”Š React Universe On Air.

Local-first software, voice agents, and real security stories with @kraenhansen.dk. Watch the full episodeπŸ‘‡

clstk.com/40ghA7m

17.02.2026 13:34 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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At the Callstack x @vercel.com AI SDK Meetup in WrocΕ‚aw, engineers and founders share how they’re shipping AI to production. From safe AI execution to real commerce and durable agents with @zaiste.net @typeofweb.com @chmal.it & Dom Sipowicz

Join us ➑️ clstk.com/3OjCfoz

16.02.2026 16:12 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Some of the best tech stories start at home.

Local-first software, security trade-offs, and thoughtful AI discussed through real experience.

New React Universe On Air episode with @psyche.social and KrΓ¦n Hansen coming soon. YouTube premiere link belowπŸ‘‡

12.02.2026 14:41 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 2
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A Hands-On Path to Bringing React Native Apps to Meta Quest | Callstack Build and ship React Native apps for Meta Quest with a practical guide to Meta Horizon OS. Learn how to set up your Expo workflow, pick compatible libraries, design for resizable VR windows, optimize ...

Grab your copy of the Guide πŸ‘‰ [https://clstk.com/metaquest](clstk.com/metaquest)

11.02.2026 16:15 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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If you already build with React Native, VR isn’t starting over.

On Meta Horizon OS, React Native runs as a 2D experience in a spatial interface.

This video explains the overlap, and the guide shows how to ship ⬇️ Link in the comments ⬇️

11.02.2026 16:14 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 1
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What Is the React Native AI SDK? A Complete Intro & Quickstart | Callstack Learn why on-device AI matters for React Native apps, how local LLMs behave offline, and what problems React Native AI is designed to solve from day one.

Your React Native app should not stop working when the internet does.

Episode 1 explains react-native-ai and on-device LLMs. No network dependency, no data leaving the device, no per-token billing. The model runs where the user is, even underground or on a plane.

Watch now ➑️ clstk.com/4rGvCLm

10.02.2026 15:33 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Callstack x Vercel AI SDK Meetup | Callstack Join the Callstack x Vercel AI SDK Meetup in WrocΕ‚aw on March 4, 2026. Practical talks on building secure, production-ready AI apps.

πŸ‘‰ Save your spot and join us: [https://clstk.com/4qoU7vm](clstk.com/4qoU7vm)

09.02.2026 16:11 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Free on March 4? Join us for the Callstack x @vercel.com AI SDK Meetup.

We’ll cover:
πŸ”Ή safe AI execution with the Vercel stack with
@chmal.it
πŸ”Ή vibe-coding a real commerce store with @zaiste.net & @typeofweb.com
πŸ”Ή how teams are shipping durable, observable agents in production with Dom

Sign up ⬇️

09.02.2026 16:11 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Use React Native to Navigate the Fragmented TV Ecosystem | Callstack Explore the living-room landscape with a comprehensive guide to React Native TV app development. Learn how platforms differ, how to design remote-friendly interfaces, how to manage focus and navigatio...

Grab your free copy of the Ultimate Guide to React Native TV Development ⬇️
clstk.com/3Zlds5O

06.02.2026 13:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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TV apps often fail in familiar ways: unreadable text, broken focus, and controls that don’t respond as expected.

Our React Native TV Development Guide shows how to fix this with proper focus handling, readable UI, and screen reader support for Apple TV (VoiceOver) and Android TV (TalkBack).

06.02.2026 13:42 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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A Hands-On Path to Bringing React Native Apps to Meta Quest | Callstack Build and ship React Native apps for Meta Quest with a practical guide to Meta Horizon OS. Learn how to set up your Expo workflow, pick compatible libraries, design for resizable VR windows, optimize ...

Grab your copy ➑️ [https://clstk.com/metaquest](clstk.com/metaquest)

02.02.2026 11:29 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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So Meta Horizon OS runs Android, but without Google Mobile Services. Most React Native and Expo libraries work, but there are some exceptions.

The React Native Developer’s Guide to Meta Horizon OS shows what works, what needs Quest alternatives, and what’s unsupported.

02.02.2026 11:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Announcing AI SDK Profiler for React Native Announcing the AI SDK Profiler plugin for Rozenite DevTools. Capture OpenTelemetry spans from the Vercel AI SDK and inspect AI requests across on-device and cloud providers.

Read the announcement ➑️ [https://clstk.com/4blPGha](clstk.com/4blPGha)

29.01.2026 17:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The Rozenite ecosystem keeps growing. ↗️
New: AI SDK Profiler for React Native.

Inspect your AI SDK calls, all in one place. Works with on-device models or in the cloud.
Read the announcement πŸ‘‡

29.01.2026 17:02 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Bringing CSS Clipping to React Native A deep look at how a single CSS feature moves through React Native’s New Architecture, from JavaScript styles to native rendering on iOS and Android.

Read the article here πŸ‘‰ [https://clstk.com/4bRynVl](clstk.com/4bRynVl)

28.01.2026 13:02 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0