Mobile app development
Athryx Tech builds mobile apps for businesses that need software people use every day on their phones. We design and ship native iOS and Android applications for visitors, staff, loyalty programmes, and operational workflows, primarily for teams in Romania and for international clients who need reliable production apps.
A mobile app only works if it fits the real journey. That means onboarding that makes sense, offline or low-connectivity behaviour when needed, push notifications that help instead of annoy, and a backend that stays in sync with your web tools and admin panels.
At Cantacuzino Castle, visitor and staff apps were central to the digital operation: ticket purchase on the phone, QR entry, and day-to-day management from connected mobile tools. MAM Bricolaj received a native loyalty app that reached 7,500 active users in four months.
We do not treat mobile as a thin wrapper around a website. We plan store releases, permissions, device testing, and post-launch iteration as part of delivery.
Problems we solve
- Paper or booth-based flows that should live on the phone
- Staff who need field tools but only have desktop software
- Loyalty or visitor programmes stuck in spreadsheets
- Apps that look fine in a demo but fail at store release or daily use
Who this is for
- Venues, retail, and operators with visitor or customer apps
- Teams that need staff apps alongside public-facing mobile
- Companies launching loyalty, ticketing, or service apps
- Product owners who want native quality with a maintainable backend
What we deliver
- Native iOS and Android app development
- Visitor, staff, loyalty, and ticketing mobile experiences
- Push notifications, QR flows, and device-friendly UX
- Shared APIs with web admin and operations tools
- App Store and Google Play release support
- Analytics hooks and crash monitoring setup
- Iteration after launch based on real usage
Technologies & stack
- Swift and Kotlin for native apps
- React Native where a shared codebase is the right trade-off
- TypeScript APIs and cloud backends
- PostgreSQL / Supabase and secure auth
- CI/CD for mobile builds and store submissions
How we work
- 01Map the mobile journey and edge cases (offline, permissions, handoffs)
- 02Prototype critical screens and validate with stakeholders
- 03Build app and backend together so data stays consistent
- 04Test on devices, release to stores, and plan the first post-launch cycle
Selected reference
Cantacuzino Castle: visitor mobile app, QR ticketing, and staff mobile tools as part of a full digital operation. MAM Bricolaj: native loyalty app with 7,500+ active users in four months.
Frequently asked questions
Native or cross-platform?
We choose based on product needs, timeline, and device features. Native Swift/Kotlin when platform depth matters; React Native when a shared codebase is a better fit. We explain the trade-off before you commit.
Do you handle App Store and Google Play submission?
Yes. We prepare builds, metadata, and the release process, and we help resolve common store review issues.
Can the app talk to our existing systems?
Yes. Mobile rarely stands alone. We integrate with your CRM, ticketing, payments, or internal APIs so the app reflects live operations.
What happens after launch?
We can stay on for maintenance, OS updates, and feature expansion. Production apps need ongoing care; we plan for that up front.
Related services
Planning a mobile app?
Describe who will use the app and what it must do on day one. We will come back with scope options and a realistic path to store release.
Get in touch