React Universe
WE DON’T JUST SHIP PRODUCTS
WE SHAPE THE SPACE

Callstack is the Total Software Engineering Consultancy that transforms organizations and teams through transformative apps.

React UniverseReact TownReact Magicion on a rock

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run your business on REACT UNIVERSE

React Universe combines front and back-end development with cross-platform capabilities using a single programming model to make faster, better apps.

University of possibilities

a UNIVERSE of possibilities

Instead of splitting development across multiple languages, platforms, and teams,we use the React Universe tech stack to make app development:

faster

with Fullstack

Develop both the front and back-end in one language.

cross-platform

capable

Build across multiple operating systems and platforms.

efficient

and lean

Streamline team structures and reduce duplication of work.

Smoother

safer, simpler

We go beyond the brief to find and fix app performance issues.

our services

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Product Development and Growth

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OPTIMIZATION OF PRODUCTS AND PROCESSES

We provide everything you need to keep apps running smoothly and efficiently.

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team UPSKILLING

We can equip your developers with the latest knowledge and tools.

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TECH STACK UPGRADE

Use up-to-date technologies to unlock new levels of performance, scalability, and efficiency.

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BUSINESS TRANSFORMATION

We specialize in helping businesses transform and thrive by leveraging innovative solutions.

Case studies

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Trusted by

“The team at Callstack are the most experienced and trusted engineers in the React Native community and ecosystem.”

Nader Dabit

Senior Developer Advocate

at Amazon Web Services

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