Your React & React Native Development Experts
Work with expert React and React Native developers to solve challenges, ship faster, and scale with confidence, on every platform.
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Callstack was founded a few months after React Native was released to support developers and companies looking to use it, without having to worry about the complexity of building native apps.
Since then, we’ve helped teams of all sizes succeed with React Native, while contributing to the core framework and maintaining key open source tools.
When your team needs direction, we bring clarity
Work with expert React and React Native developers to solve challenges, ship faster, and scale with confidence, on every platform.
Get expert support all things React
Launch faster on all platforms
Scale React at your organization
Ship production-ready AI cross-platform
We are proud members of React community
Core Contributors
If you're looking for skilled and trusted React Native developers, Callstack is definitely the way to go.
The team at Callstack are the most experienced engineers in the React Native community.
Their ability to deliver, and follow through, is unparalleled in the React Native ecosystem.
Our libraries are used by millions of developers worldwide
If you're creating an app with React or React Native, there's a good chance our code is already running in your application.
We build apps in the React Universe
Instead of splitting development across multiple languages, platforms, and teams, we combine front and back-end development with cross-platform capabilities using a single programming model.
We solve all React Native challenges, from brownfield to greenfield
Your cross-platform knowledge hub
React Native Wrapped 2025: A Month-by-Month Recap of The Year
The first edition of React Native Wrapped looks back at the year RN turned 10 and the ecosystem doubled down on the New Architecture. It provides a month-by-month record of 2025, covering major framework releases, the Legacy Architecture freeze, React 19 integration, and notable developments across tooling, performance, styling, native modules, Expo, and platform adoption.
Building v0 iOS and Fixing React Native Along the Way
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Shipping iOS Live Activities with React: The Voltra Story
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Scaling React Native at Zalando: How Brownfield Migration Paid Off
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Your challenge is next!
Let us know what you’re building,
we are always happy to help!
We think they are great developers and we learned a lot from them.
Having Callstack is a wonderful experience and gives us the ability to move so much faster than we could without them.
They took our team from 'zero to hero' in React Native
Despite the geographical distance, our collaboration has been successful with strong deliveries on time.
