For the vast majority of business applications, React Native performance is indistinguishable from native. React Native's New Architecture, which became the default starting with version 0.76, replaced the old asynchronous bridge with JSI (JavaScript Interface), allowing JavaScript to call native functions synchronously. This eliminates the communication bottleneck that was the primary source of performance issues in earlier versions. In practice, apps built on the New Architecture achieve consistent 60 FPS for standard UI interactions like scrolling lists, form inputs, and screen transitions. Where you will still see a gap is in GPU-intensive use cases like complex real-time animations, video processing, or 3D rendering. For those specific features, we write thin native modules in Swift or Kotlin and expose them to the React Native layer, so performance-critical code runs natively while the rest of the app stays cross-platform.

React Native is used in production by companies across nearly every industry. Meta runs Facebook, Instagram, and Messenger on it. Microsoft ships Outlook, Teams, and Xbox apps with React Native. Shopify rebuilt its core mobile app in React Native, and Coinbase uses it for their crypto trading platform. At Cuttlesoft, we have built React Native apps for healthcare (HIPAA-compliant patient-facing apps with HealthKit integration), e-commerce (subscription management with in-app purchases), education (interactive learning tools with hardware integration), and fintech (secure mobile banking with biometric authentication). The framework handles these well because it has mature ecosystem support for platform APIs, push notifications, real-time data, offline storage, and deep linking. The primary cases where React Native is not the right fit are highly GPU-intensive applications like 3D games or professional video editing tools.

Expo is a production-grade framework built on top of React Native. It provides a standard library of pre-built native modules (camera, file system, notifications, location, and more), a managed build service called EAS (Expo Application Services) that compiles your app in the cloud, and over-the-air update capability so you can push JavaScript changes to users without submitting a new binary to the App Store or Google Play. Cuttlesoft uses Expo because it eliminates a significant amount of build tooling overhead. Instead of manually configuring Xcode and Android Studio for every project, we define native dependencies through Expo config plugins and let Continuous Native Generation handle the platform projects. This approach speeds up initial project setup, simplifies dependency management, and makes upgrading to new React Native versions considerably less painful. When a project requires custom native code that Expo's managed workflow does not support, we eject specific modules using Expo's Modules API rather than abandoning Expo entirely.

React Native and Flutter are the two dominant cross-platform mobile frameworks, and the right choice depends on your team and your product. React Native uses JavaScript and TypeScript, which means any team with web development experience in React can transition to mobile development without learning a new language. Flutter uses Dart, which has a smaller developer pool and requires dedicated hiring or retraining. React Native renders using each platform's actual native UI components, so your app automatically follows iOS and Android design conventions. Flutter draws its own UI using a custom rendering engine (Impeller), which gives you pixel-perfect consistency across platforms but means your app will not automatically match platform-specific patterns like iOS swipe-back navigation or Android's Material You theming. For performance, both frameworks are capable of smooth 60 FPS in typical business applications. Flutter has a slight edge in animation-heavy UIs because of its compiled rendering pipeline. React Native has the advantage of the massive npm ecosystem, with access to over two million packages. Cuttlesoft chose React Native because most of our clients already have React web applications, and sharing code, components, and developer knowledge between web and mobile is a meaningful efficiency gain.

Yes. React Native supports incremental adoption, meaning you do not have to rewrite your entire app at once. You can embed React Native views inside an existing Swift or Kotlin application, migrate screens one at a time, and run both native and React Native code side by side. This is how large companies like Microsoft and Shopify transitioned their apps without a full rewrite. At Cuttlesoft, we typically approach migrations by identifying the screens and features that are most expensive to maintain in parallel across iOS and Android, migrating those first, and leaving performance-critical native code in place where it makes sense. The goal is not to replace every line of native code. The goal is to consolidate the 70% to 80% of your app that is standard UI and business logic into a shared codebase, and keep the remaining platform-specific features as thin native modules.

We follow a sprint-based process with two-week cycles. Each project starts with a discovery phase where we define the scope, map out the technical architecture, and identify any native integrations or third-party services that need to be accounted for. From there, we build in iterative sprints, delivering working builds at the end of each cycle that you can test on your own device through Expo's development builds or TestFlight and Google Play internal testing tracks. Our stack for most React Native projects includes Expo for the framework layer, TypeScript for type safety across the codebase, React Navigation for routing, and either a REST API or GraphQL backend built in Django or Node. We run automated tests with Jest for unit and integration coverage and Maestro for end-to-end testing on real devices. Throughout the project, you work directly with senior developers, not account managers relaying messages. You can learn more about how we structure engagements on our process page.

Timeline depends on scope, but here are realistic ranges based on our experience. A focused MVP with five to eight screens, authentication, and a backend API integration typically takes eight to 12 weeks. A full-featured app with complex integrations (payment processing, real-time data, push notifications, admin dashboard) usually takes three to six months. A migration from an existing native app varies widely depending on the size of the codebase and how much native-specific logic needs to be preserved, but we typically plan migrations in phases over three to nine months. The cross-platform nature of React Native does compress these timelines compared to building separate native apps, but it does not cut them in half. You still need design, testing, backend development, and App Store review cycles. What React Native saves you is the duplication: one set of features, one QA pass, one deployment pipeline instead of two.

Yes. Post-launch support is a core part of what we offer, not an afterthought. Mobile apps require ongoing maintenance because the underlying platforms change. Apple and Google release major OS updates annually, React Native and Expo ship new versions on a regular cadence, and third-party dependencies need to be kept current to avoid security vulnerabilities. Our maintenance engagements typically include React Native and Expo version upgrades, dependency audits and updates, bug fixes and performance monitoring, App Store and Google Play submission management, and over-the-air updates for JavaScript-layer changes using EAS Update. We also handle the less glamorous but critical work of keeping your app compliant with evolving App Store and Play Store policies, like new privacy manifest requirements on iOS or target SDK version bumps on Android. You can reach us through our contact page to discuss a maintenance plan.