Callstack

Top React & React Native experts

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Callstack is a top cross-platform consultancy & development company that operates within React.js and React Native. Since 2016 the company gathers the best experts in the field and provides a wide range of React and React Native services.

We co-create the technology we offer. We collaborate daily with the Meta team on setting the direction for the future growth of the React Native framework. 

We organize the biggest React Native conference in the world (and the first conference in Europe) which focuses exclusively on React Native. We also host The React Native Show - a podcast series that explores different aspects of the React universe.

$100 - $149/hr
10 - 49
2016
Locations
Poland
ulica Prosta 36,, Wroclaw, Lower Silesia 53505

Focus Areas

Service Focus

35%
35%
30%
  • Web Development
  • Software Development
  • Mobile App Development

Client Focus

80%
20%
  • Medium Business
  • Large Business

Industry Focus

20%
20%
20%
20%
20%
  • Advertising & Marketing
  • Business Services
  • Financial & Payments

Callstack Clients & Portfolios

Key Clients

  • Major League Soccer
  • AutoZone
  • Stripe
  • Momo
  • Expo
  • Kiwi

Extending React Native Capabilities by Adding Native Extensions
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Extending React Native Capabilities by Adding Native Extensions
  • Extending React Native Capabilities by Adding Native Extensions screenshot 1
Not Disclosed
20 weeks
Art, Entertainment & Music

The client had a conventional mobile application for platforms – iOS and Android. They decided on a complete restart with a brand-new design. The client built a prototype in React Native just to prove that this idea might be correct. Then we joined the project to help make this dream happen. We have been there from the very beginning to help solve the various issues which came along with the React Native project where we have a strong level of expertise.

MoMo improved performance of their super app and mini apps by migrating their architecture to Re.Pack
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MoMo improved performance of their super app and mini apps by migrating their architecture to Re.Pack
  • MoMo improved performance of their super app and mini apps by migrating their architecture to Re.Pack screenshot 1
Not Disclosed
30 weeks
Financial & Payments

We were asked to migrate the existing MoMo platform (super app) and their mini apps to a separate repository with the help of the Re.Pack library. Also, we created their in-house development platform available for third-party developers to work on MoMo’s mini apps

Continuous Improvement of the AutoZone Applications
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Continuous Improvement of the AutoZone Applications
  • Continuous Improvement of the AutoZone Applications screenshot 1
Not Disclosed
100 weeks
Automotive

For nearly four years we’ve been working with the AutoZone teams on their AutoZone web and mobile applications. Initially, the primary purpose of our cooperation was to enhance the performance of the AutoZone web app on mobile devices and to migrate old native apps into a new React Native app.

As the projects evolved, the scope of work naturally expanded as the client wanted us to take care of more features. That’s why, after reaching the most important milestones, we turned to address other needs. Now we are working on securing further improvement and, all in all, making every effort to keep up the metrics at the highest level.

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