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Case studies
Challenges we solved so far
Take a look at the projects we did for enterprises and small businesses. We can help your company grow as well.
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React Universe App: Networking Evolved with Liquid Glass
63%
adoption rate; majority of attendees registered in the app
A great developer conference is equally about talks and schedules as it is about connecting with people. For our flagship React Universe Conf, Callstack set out to create a digital companion app that went beyond the agenda and made networking effortless.
React Universe App: Networking Evolved with Liquid Glass
63%
adoption rate; majority of attendees registered in the app
A great developer conference is equally about talks and schedules as it is about connecting with people. For our flagship React Universe Conf, Callstack set out to create a digital companion app that went beyond the agenda and made networking effortless.
Migrating Questrade Edge Mobile to a Faster, More Scalable Architecture
33%
fewer re-renders across most features
Optimized a high-volume trading app’s startup time, responsiveness, and rendering under heavy data load, while preparing it for React Native’s New Architecture to deliver faster, smoother performance in critical user flows.
Migrating Questrade Edge Mobile to a Faster, More Scalable Architecture
33%
fewer re-renders across most features
Optimized a high-volume trading app’s startup time, responsiveness, and rendering under heavy data load, while preparing it for React Native’s New Architecture to deliver faster, smoother performance in critical user flows.
Building Scalable Observability for a High-Growth React Native App
3→1
analytics systems unified into a single interface
By introducing custom performance tracking and stabilizing their test infrastructure, we helped the client detect incidents faster, improve release quality, and enable reliable performance insights across their React Native mobile app.
Building Scalable Observability for a High-Growth React Native App
3→1
analytics systems unified into a single interface
By introducing custom performance tracking and stabilizing their test infrastructure, we helped the client detect incidents faster, improve release quality, and enable reliable performance insights across their React Native mobile app.
Training HelloFresh Engineers to Build Production Apps With React Native
2.8x
increase in knowledge over 8 weeks (25% → 71% assessment scores)
We delivered a practical, real-world React Native training program tailored to the client’s internal architecture. In eight weeks, 15 developers were trained to work in a shared mobile codebase.
Training HelloFresh Engineers to Build Production Apps With React Native
2.8x
increase in knowledge over 8 weeks (25% → 71% assessment scores)
We delivered a practical, real-world React Native training program tailored to the client’s internal architecture. In eight weeks, 15 developers were trained to work in a shared mobile codebase.
Migrating iOS and Android Apps to React Native for AutoZone
2x
growth in mobile user base during the migration period
AutoZone partnered with Callstack to replace its aging native apps with a single cross-platform codebase, keeping its biweekly release cycle while migrating core app functionality to React Native.
Migrating iOS and Android Apps to React Native for AutoZone
2x
growth in mobile user base during the migration period
AutoZone partnered with Callstack to replace its aging native apps with a single cross-platform codebase, keeping its biweekly release cycle while migrating core app functionality to React Native.
Optimizing Android TV Startup for Global Streaming Platform
5%
faster startup time on FireTV and FireHD devices
We identified a performance bottleneck in an enterprise streaming app and introduced a simple change that improved startup time by up to 5% on Android-based platforms, without any major refactoring.
Optimizing Android TV Startup for Global Streaming Platform
5%
faster startup time on FireTV and FireHD devices
We identified a performance bottleneck in an enterprise streaming app and introduced a simple change that improved startup time by up to 5% on Android-based platforms, without any major refactoring.
Launching a High-Performance React Native App on Samsung TV
5
platforms under one RN codebase: tvOS, FireTV, Tizen, LG, Vizio
Rebuilding the legacy Samsung TV app in React Native restored feature parity, improved performance, and aligned it with the client’s shared TV codebase, without growing the team.
Launching a High-Performance React Native App on Samsung TV
5
platforms under one RN codebase: tvOS, FireTV, Tizen, LG, Vizio
Rebuilding the legacy Samsung TV app in React Native restored feature parity, improved performance, and aligned it with the client’s shared TV codebase, without growing the team.
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We don't follow best practices, we set them
React Native Core Contributors
Trusted by Meta, Microsoft, and the community
We don't follow best practices, we set them
React Native Core Contributors
Trusted by Meta, Microsoft, and the community
We don't follow best practices, we set them
React Native Core Contributors
Trusted by Meta, Microsoft, and the community
We don't follow best practices, we set them
React Native Core Contributors
Trusted by Meta, Microsoft, and the community
We don't follow best practices, we set them
React Native Core Contributors
Trusted by Meta, Microsoft, and the community
We don't follow best practices, we set them
React Native Core Contributors
Trusted by Meta, Microsoft, and the community
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Contributing since 2016
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