React Native App Development
Square builds cross-platform mobile apps with React Native from Tirana: one codebase that ships to both iOS and Android. It is the right call when you want native feel and store presence without funding two native teams, and a natural fit if you already run React on the web. We use Expo where it speeds things up, drop to native modules when a feature needs it, and handle the full path through TestFlight and Play Console.
What we build
- Cross-platform iOS and Android apps from a single TypeScript codebase, with native navigation and gestures
- Native module integration when you need camera, Bluetooth, biometrics, maps or device-specific APIs
- Offline-first apps with local storage, sync and background tasks for unreliable-network use cases
- Push notifications, deep links and over-the-air updates so you ship fixes without an app-store review
- Full release pipeline: builds, signing, TestFlight and Play Console submission, and store-listing setup
Why this stack
- Choose React Native to launch on both iOS and Android from one codebase, usually well below the cost of running two native teams
- If you already run React on the web, your team reuses language, patterns and even shared logic across web and mobile
- Mature path to native: drop into Swift/Kotlin modules whenever a feature genuinely needs platform-specific code
- Over-the-air updates let you fix bugs and ship tweaks in hours instead of waiting on app-store review cycles
- One team owns both store releases, so iOS and Android get the same feature on the same day
- Senior engineers at EUR 35 to 55 per hour, billed monthly with no agency markup
Frequently asked questions
React Native or fully native (Swift/Kotlin)?
React Native when you want one team and one codebase across both platforms and the app is UI- and data-driven, which covers most business and consumer apps. Go fully native for graphics-intensive games, heavy AR or apps that live or die on bleeding-edge platform APIs. We'll tell you honestly which side your app falls on.
Expo or bare React Native?
We start with Expo because its managed workflow, OTA updates and build service speed everything up. When you need a native module Expo doesn't cover, we add it through a config plugin and development builds, or generate the native projects with prebuild; you're never boxed in.
Can you reuse our existing React web code?
Often yes for logic, types, validation and API clients; UI components are rebuilt with native primitives since the web DOM doesn't exist on mobile. The shared mental model still makes one team productive across both, which is the real saving.
Do you handle App Store and Play Store submission?
Yes: builds, signing, store listings, and the review process for both Apple and Google. We've shipped through TestFlight and Play Console and manage the back-and-forth with reviewers as part of the engagement.