Build high-quality mobile apps—faster, with one codebase
Build mobile apps that perform like native—without the cost and complexity of maintaining two separate codebases. With React Native, you can ship faster and reach more users from day one.
Why teams choose React Native for mobile apps
React Native gives you native performance, shared logic across platforms, and a mature ecosystem backed by Meta. It’s a proven choice for companies building at scale.
Native performance without compromise
Access native APIs and render real native UI components with full platform integration.
Native performance without compromise
Access native APIs and render real native UI components with full platform integration.
One codebase, many platforms
Maintain a single codebase across iOS and Android—plus web, desktop, or TV when you’re ready.
One codebase, many platforms
Maintain a single codebase across iOS and Android—plus web, desktop, or TV when you’re ready.
Proven to work at scale
Used by Fortune 500s and startups alike—React Native powers apps with millions of users.
Proven to work at scale
Used by Fortune 500s and startups alike—React Native powers apps with millions of users.
React Native powers products at some of the most recognized companies worldwide
React Native has become a core technology for teams building apps across industries—enabling faster delivery, consistent user experiences, and cross-platform reach from a shared codebase. Today, it's trusted by organizations delivering apps to millions of users every day.
Mobile app that’s built to scale across platforms
A production-ready foundation designed for real-world use—scalable across iOS, Android, and beyond.
Single codebase for every platform
Your iOS and Android apps are delivered from one codebase—built to support web, desktop, or other targets when needed.
Full access to native capabilities
Camera, gestures, push notifications, payments, biometrics—we integrate the platform features your product actually relies on.
Architecture that scales
Modular structure, typed interfaces, and shared UI systems make it easy for your team to scale development confidently.
Automated delivery from day one
CI/CD, testing, versioning, and release processes are all included—so you can ship fast and safely from the start.
Stable performance across devices
Your app will feel fast and native on low-end Android phones and the latest iPhones—because we optimize for both.
Owned by your team
Well-documented code, clear ownership, and handoff-ready onboarding for your in-house team to continue development without guesswork.
How to Make Your React (Native) App Feel Native?
Delivering a true native feel is critical to the success of cross-platform apps. In this session, Oskar shares advanced strategies for achieving a polished, platform-consistent user experience—covering best practices, key libraries, and the trade-offs between native and JavaScript-driven navigation.
Build once, launch everywhere—with native UX and full platform support
Build a cross-platform mobile app
Build once with full support for both iOS and Android, delivering a polished native feel—ready for store submission.
Bring full feature parity across platforms
Align your application features across iOS and Android to give all users the same native experience.
Add native features and platform integrations
Implement platform capabilities like Live Activities, App Clips, and Foreground Services—using the latest APIs for a polished, modern experience.
Expand to tablets, wearables, and embedded devices
Extend your mobile app beyond phones. Reuse core logic where possible, while adapting the UI and features to feel truly native on every surface.
Why leading companies work with Callstack
Meta Official Partners
We are official Meta partner for React Native, co-organizers of React Conf and hosts of React Universe Conf.
Working at scale
We know how to make React Native work at enterprise scale, both technically and organizationally.
React Native Core Contributors
We don’t just use React Native to build cross-platform apps, we help shape it for millions of developers.
Team at scale
We’re a team of 200+ engineers ready to start fast and scale with your needs.
Enterprise-friendly
We hold ISO certifications and follow strict security standards to make onboarding smooth and compliant.
Wide range of services
As a partner for your full application lifecycle, we offer a full range of services around React and React Native.
FAQs
Building and maintaining a mobile app raises plenty of practical questions—around delivery, feature parity, platform support, and long-term ownership. Here’s how we typically support teams at each stage of the product lifecycle.
Yes—we can lead end-to-end delivery or embed alongside your product and design teams.
We follow shared design systems and test across devices to make sure your app looks and behaves consistently on both iOS and Android.
Yes. We audit for platform gaps and implement missing functionality to maintain parity across releases.
We monitor evolving guidelines and ensure your app meets review criteria to avoid unnecessary delays.
We help define clear ownership, integrate with your release planning, and support parallel development tracks.
We offer both. Our teams can continue to support maintenance, updates, and platform evolution post-launch.
Absolutely. We tailor UI and interaction models for new form factors while reusing shared logic wherever possible.
Need a partner to build or scale your mobile app?
We work with product and engineering teams to deliver cross-platform apps that meet performance, UX, and platform quality standards—at any stage of development
