React Native
A cross-platform mobile framework we use to build iOS and Android applications from one primary codebase — chosen when it fits the product's actual requirements, not applied as a default regardless of fit.
- Shared UI components
- Shared business logic
- iOS target
- Android target
- Device capability bridge
- Push notification bridge
- API integration layer
- Store submission
- Over-the-air update
React Native is a framework for building iOS and Android applications from a largely shared JavaScript/TypeScript codebase, rendering to real native UI components rather than a web view. North Tech Labs uses it as the default starting point for mobile engagements because it reduces the cost of maintaining two platform-specific codebases, while still allowing fully native modules where a specific platform capability genuinely requires them.
Where it fits
Most mobile products don't need two fully separate, independently maintained iOS and Android codebases to deliver a good user experience. React Native lets a single engineering team build and evolve one codebase that covers both platforms, which typically reduces development time and ongoing maintenance effort compared to maintaining two native codebases in parallel.
That reduction is not automatic or unconditional. Apps with heavy platform-specific requirements — deep hardware integration, complex custom animations tied to a specific platform's rendering pipeline, or features that only exist as native SDKs — still require native modules written in Swift/Kotlin, which narrows but doesn't remove the cross-platform advantage for those specific parts of the app.
We treat React Native as the default starting point for new mobile engagements because it fits the majority of business applications we see — customer apps, field-operations tools, internal apps — where the core value is the product's workflow and data, not platform-specific UI behaviour.
Core capabilities
- A single component tree rendered as native iOS and Android UI elements
- Shared business logic, state management, and navigation across platforms
- Platform-specific styling and behaviour where the product genuinely needs it
- Native modules (Swift/Kotlin) for capabilities without a JavaScript equivalent
- Access to device APIs — camera, location, push notifications, biometrics
- Bridging to existing native SDKs where a vendor requires one
- Fast iteration during development via live/hot reloading
- A single codebase for most bug fixes and feature work across both platforms
- Reuse of TypeScript types and validation logic shared with a Node.js backend
Common use cases
- Customer-facing mobile appsConsumer or business-customer apps where the core value is the product experience, not platform-exclusive behaviour.
- Field-operations appsTools for technicians, drivers, or field staff — job assignment, status capture, and offline-aware data entry.
- Internal operational appsEmployee-facing apps for internal workflows, where two platform-specific builds would be disproportionate engineering cost.
- MVP and early-stage productsProducts validating a market or use case, where reaching iOS and Android from one codebase shortens the path to a working release.
Architecture & integration considerations
- Native module boundariesDeciding early which parts of the app, if any, need dedicated native code, so the architecture doesn't fight the framework later.
- Offline and sync behaviourLocal data caching and synchronisation logic added deliberately for the specific screens that need it, not assumed everywhere by default.
- Backend and API designAn API layer designed to serve the mobile app without duplicating business logic already implemented elsewhere.
- Release and update cadenceApp Store and Play Store review timelines factored into how frequently native-layer changes can ship, distinct from JavaScript-only updates.
Strengths
- Shared codebase across platformsOne team, one codebase, and one set of business logic to maintain for the majority of the app, instead of two.
- Real native UIRenders actual native UI components, which generally gives better performance and platform feel than a web-view-based hybrid approach.
- Mature ecosystemFor common mobile patterns — navigation, forms, camera access — a maintained library usually already exists, so engineering time goes into the product's actual logic instead of rebuilding infrastructure other teams have already solved.
- Native escape hatchNative modules remain fully available, so a cross-platform choice doesn't permanently block platform-specific capability later.
Trade-offs & limitations
- Not zero native workNon-trivial apps typically still require some native code for specific integrations or platform behaviour. React Native reduces native work; it does not eliminate it.
- Native SDK dependency riskSome third-party SDKs are native-first or native-only, requiring a bridging layer that adds engineering effort and an extra maintenance surface.
- Performance ceiling for extreme casesFor apps with very heavy graphics, real-time processing, or animation workloads, a fully native implementation can still outperform a React Native one.
- Framework upgrade overheadReact Native and its native module ecosystem evolve independently, and upgrading versions can require coordinated changes across both.
- UI is not automatically identical on both platformsShared components still need platform-aware design and testing — visual and interaction parity across iOS and Android is a design decision, not a given.
When to use it
- The product's core value is workflow, data, and user experience rather than platform-exclusive capability
- Both iOS and Android need to launch within a similar timeframe
- The team benefits from one codebase and one release process to maintain going forward
- The project is cost- or timeline-sensitive and a shared codebase materially helps
When another option may be more appropriate
- The app depends heavily on a capability with no mature React Native bridge and no acceptable workaround
- Performance requirements are at the extreme end (e.g. heavy real-time graphics or signal processing)
- Only one platform is genuinely in scope, removing the cross-platform advantage entirely
- An existing native codebase is stable, well-maintained, and a rewrite isn't justified by the product's roadmap
Relevant services
Relevant industries
- Logistics and MobilityCustom logistics, fleet, mobility and transport software for companies managing complex operations across the Nordic region.
- ManufacturingCustom manufacturing software, operational platforms and connected systems for companies modernising production across Sweden and the Nordic region.
- Climate Tech and EnergySoftware platforms, data systems and digital products for energy, electrification and climate-focused businesses across the Nordic region.
Representative solutions
Alternatives & complementary technologies
- Fully native (Swift + Kotlin)Two independent codebases, appropriate when platform-specific performance or capability requirements outweigh the cost of maintaining both separately.
- FlutterAnother cross-platform framework with a different rendering approach; a reasonable alternative we evaluate case by case rather than defaulting away from.
- Progressive web appA web-based approach appropriate when app-store distribution and deep device integration aren't actually required.
Frequently asked questions
Does React Native mean the same app runs identically on iOS and Android?
No. It means most of the codebase — logic, state, and much of the UI — is shared, but platform-specific design, testing, and occasional native code are still part of building a good app on both platforms.
Will React Native always be cheaper than native development?
Usually, for apps where the core value is shared across platforms — but not guaranteed. Apps with significant platform-specific requirements can narrow or remove that cost advantage.
Can a React Native app use native device features?
Yes, through native modules — either existing community libraries or custom native code written for a specific requirement.
Do you always recommend React Native for mobile projects?
No. We recommend it when it fits the product's requirements, which is true for most business applications we build, but we evaluate fully native development when the requirements call for it.
Considering React Native for your next project?
Tell us what you're building — we'll confirm whether this is the right technology choice before recommending anything.