React Native App Development Company for iOS and Android
We are a React Native team first, not a generalist shop that happens to use it. We build on React Native's New Architecture, keep apps fast with Hermes, set projects up with Expo and EAS, and ship updates over the air, so your app is quick to build, quick to change, and quick to fix. And we have the shipped apps to prove it: a school platform, a video social network, a meditation app and a mechanical-watch app, all live on iOS and Android.Built on React Native's New Architecture
We build new apps on React Native's New Architecture, the Fabric renderer and Turbo Modules over the JSI bridge, which removes the old serialization bottleneck between JavaScript and native code. In practice that means smoother UI, faster startup and native modules that talk to the app with less overhead. For existing apps, we move them to New Architecture when we upgrade the app.
What React Native gives your product
Fast iteration with Fast Refresh
Code changes appear instantly during development, so features and fixes move quickly.Reusable components
Reusable components keep the UI consistent across the app and across future projects.A large ecosystem
A large ecosystem of third-party libraries and SDKs means common features do not have to be built from scratch.Offline support
Offline support through local storage such as MMKV, AsyncStorage and SQLite means the app works without a connection and syncs later.Scalability
The same codebase and modular architecture serve a small MVP and a large, feature-heavy product.Our React Native app development services
React Native consulting and architecture
We decide whether React Native fits, choose Expo or a bare workflow, and design a modular, typed architecture that stays maintainable as the app grows.Custom React Native development
We build clean, TypeScript-based React Native code, with native modules in Swift and Kotlin wherever a feature needs platform-specific capability or speed.Performance engineering
We profile and tune the app so it stays near-native under real use, not just in a demo.QA on real devices
We test across real iOS and Android hardware, OS versions and screen sizes, where the edge cases actually surface.Store release and over-the-air updates
We handle App Store and Google Play submissions and wire up over-the-air updates so many fixes reach users without a full app store review.Migration and version upgrades
We move native or aging apps onto React Native, and keep existing React Native apps current through the version upgrades.How we keep React Native fast
React Native on its own does not guarantee performance, engineering does. We ship with the Hermes engine for faster startup and lower memory, profile with React Native DevTools, optimize list rendering and images, and push heavy work into native modules where the JavaScript thread would otherwise stall. The result is an app that stays smooth as data and features grow.
Expo or bare React Native, set up the right way
Most products are best served by Expo with EAS (Expo Application Services) for builds, submissions and updates, which removes a lot of native tooling pain. Some apps need a bare workflow for custom native code or specific SDKs. We pick the setup that fits your app from the start, and we can move between them as requirements change.
Shipping updates without waiting on app review
For a fast product, waiting days for an app-store review on every small change. We set up over-the-air updates through EAS Update or CodePush, so JavaScript and asset changes can reach users almost immediately, while native changes still go through the stores. That keeps the release cycle quick without breaking store rules.
Native modules and deep device integration
When an app needs the camera, Bluetooth, background processing, payment SDKs or any native capability React Native does not expose out of the box, we bridge to it with native modules in Swift and Kotlin. That lets a React Native app do everything a native app can, while keeping the single, shared codebase for the rest.
Kinds of apps we build with React Native
We have shipped consumer and content apps, multi-user platforms and SaaS, social and media apps, and utility apps with React Native. The framework is an equally strong fit for commerce and marketplace apps, booking and on-demand apps, and internal business tools, where one shared codebase keeps iOS and Android in step.
React Native apps we have shipped
Education, GraphQL/SaaS/React/React Native
Procreche SaaS & Mobile App
Procreche (Morocco) is SaaS Web Application for Schools in Morocco. It provides communication between Parents and Kindergarteners about their day to day actitivies (Events, Gallery, Communication Diary, Milestones, Attendance). We developed Android and iOS Mobile/Tablet App for School Directors.- Tech stack: GraphQL, SaaS, React/React Native
- Industry: Education
Spirituality, React Native/iOS/Android
Sai Karuna Mission
Sai Karuna Mission(SKM) is a spiritual research organisation where they research on Aura and guide people about the cause of their problems and teach them theta/delta level meditations to overcome those problems.- Tech stack: React Native, iOS, Android
- Industry: Spirituality
Utility, React Native/iOS/Android
Wirlix
Wirlix (U.S.A.) is a video-based social network for fun group discussions on any topic. Wirlix allows people to create videos so other members of the community can respond through their own short videos. Wirlix's key value is to put your face behind what you say to take accountability for your opinions and creations on the app.- Tech stack: React Native, iOS, Android
- Industry: Utility
Utility, React Native/iOS/Androd
Horology
Horology is a mechanical watch app for your phone / tablet. Experience all the functionalities of a mechanical watch. The display, interface, features, and complications are designed to work exactly like a mechanical timepiece.- Tech stack: React Native, iOS, Androd
- Industry: Utility
What shapes cost and timeline
We keep pricing conversational, because scope drives it. For React Native specifically, the main factors are how much native module and SDK work is involved, how demanding the performance and animation requirements are, the number of third-party integrations, and whether we are building new or migrating and upgrading an existing codebase. We work in phases so you see a running app early.
How we work
1
Discovery & Architecture
Understand the product, then choose Expo or bare and the architecture.2
Environment Setup
Set up the New Architecture, Hermes, TypeScript and the CI/build pipeline on EAS.3
Development
Build in modular phases, bridging to native modules where needed.4
Integration
Integrate the backend, APIs and any native SDKs.5
Testing & Performance
Profile, test on real devices, and fix performance before release.6
Deployment & Launch
Ship to the App Store and Google Play, with over-the-air updates set up.7
Maintenance & Continuous Improvement
Maintain the app: version upgrades, OS compatibility and new features.Why Crescibit for React Native
Proven Track Record
Every proof point above is a real React Native app we shipped to the stores.Modern React Native Stack
We work the modern React Native way: New Architecture, Hermes, Expo and EAS, TypeScript and over-the-air updates.Native When It Matters
We bridge to native in Swift and Kotlin when an app needs it, so React Native is never a ceiling.Senior Team, Long-Term Partnership
You work directly with the senior developers building your app, and we stay on after launch.Frequently asked questions
The New Architecture (the Fabric renderer and Turbo Modules over JSI) replaces the old bridge between JavaScript and native code, giving smoother UI and faster, lower-overhead native calls. New apps we build start on it. For an existing app, we advise whether a move is worth the effort rather than upgrading blindly. We build the new apps with New Architecture and move the existing apps to New Architecture when we update them.
Both. Most apps do well on Expo with EAS, which simplifies builds, submissions and updates. Some need a bare workflow for custom native code. We choose the right setup for your app and can migrate between them if requirements change.
We ship with the Hermes engine, profile the app, optimize list and image rendering, and move heavy work into native modules so the JavaScript thread stays free.
Yes. With over-the-air updates through EAS Update or CodePush, JavaScript and asset changes reach users almost immediately. Native changes still go through the stores.
Yes. Through native modules in Swift and Kotlin we bridge to the camera, location, Bluetooth, biometrics, background tasks, payment SDKs and more, so a React Native app can do anything a native app can.
Yes, when it is built for it: a modular architecture, TypeScript, the New Architecture and native modules where needed. That is how large products run React Native reliably.
We use the React Native upgrade tooling, test on the React Native upgrade tooling, testing on real devices, and keeping dependencies and native code in step, so your app stays current with React Native and with iOS and Android releases.
React Native suits teams already in the React and JavaScript ecosystem and apps that lean on native modules; Flutter gives very consistent UI control. We build with both and recommend based on your product. See our Cross-Platform App Development and Flutter App Development pages.
React builds web interfaces; React Native uses the same ideas to build real iOS and Android apps. A team that knows React moves to React Native efficiently, and some logic can be shared across web and mobile.
Explore our other services
We work across the whole product lifecycle, so most projects touch more than one service.
Mobile App Development