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React Native App Build
Full-featured iOS and Android applications from design to App Store and Play Store submission — with production-quality code.
- iOS & Android
- App Store submission
- Production code quality
OSYSTIC
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We build React Native applications using platform-appropriate components, meeting App Store and Play Store standards at a quality users will not notice is not native.
We scope around the system you actually need to operate, maintain, and operate — not a fixed vendor product or a one-size-fits-all implementation.
Full-featured iOS and Android applications from design to App Store and Play Store submission — with production-quality code.
OTA update infrastructure, push notifications, and native module integration using the Expo ecosystem.
Local storage, sync queues, and conflict resolution for applications that must function without reliable connectivity.
List virtualisation, animation optimisation, and bundle splitting to maintain smooth interactions on the full device range.
Automated build, test, and distribution pipelines using EAS Build and GitHub Actions — TestFlight and internal track delivery.
Each engagement is broken into defined phases with reviewable outputs. Scope can adapt, but accountability stays visible.
Review platform requirements, offline needs, native module integrations, and store submission requirements before any code is written.
Set up navigation structure, authentication flows, and the API integration layer before building any screens.
Build core screens iteratively — delivered to TestFlight and Play Store internal track for real-device testing at each milestone.
List virtualisation, animation optimisation, and bundle splitting to maintain smooth interactions across the target device range.
VoiceOver and TalkBack testing, touch target sizing, and colour contrast across both platforms.
Technology choices follow your environment, operating constraints, team capability, and long-term ownership requirements.
The same technical capability can require very different controls, integrations, and operating models across industries.
B2B mobile clients, developer tool companions, enterprise mobile dashboards.
Shopping apps, loyalty programmes, in-store associate tools, inventory scanning.
Patient-facing apps, remote monitoring, medication tracking, telehealth clients.
Driver apps, delivery tracking, warehouse scanning, proof-of-delivery capture.
The exact architecture and delivery plan depend on your environment. These answers describe how OSYSTIC approaches the work.
For most business applications, React Native delivers equivalent user experience at significantly lower cost — one codebase instead of two. For highly performance-critical or hardware-intensive use cases, we will tell you if native is the better choice.
Yes. We handle the full submission including screenshots, metadata, privacy manifest (iOS), and compliance requirements. Store review timing is controlled by Apple and Google and can vary by submission and account state.
EAS Update lets you ship JavaScript changes without going through store review. Native code changes still require a full store release. We set up the update infrastructure as part of the initial build.
Yes. TestFlight and Play Store internal track are set up early so every milestone is tested on real hardware, not just simulators.
Tell us your platform requirements and what the app needs to do. We will come back with a scoping assessment.