Mobile App Development: Apps people keep on their home screen.
Build
What is mobile app development?
Mobile app development is designing, building and releasing applications for iOS and Android, including the APIs, admin tools and data they depend on. Witty builds cross-platform apps with React Native and Expo, so one codebase ships to both stores.
The hard part of an app is rarely the screens. It is deciding the few things it must do brilliantly, how it gets its data, and how you will support it after launch. We work through those questions first, then design and build an app that feels native on both platforms.
Sound familiar?
Problems we solve
An idea, but no clear first version
We help you cut a long feature list down to a first release that proves value and can ship in weeks, not quarters.
Two platforms, one budget
Cross-platform development with React Native and Expo avoids building and maintaining two separate apps.
Data trapped in other systems
Apps are only as useful as the data behind them. We build or connect the APIs your app needs.
Field teams on paper forms
Internal apps for inspections, deliveries, bookings or sales visits replace paperwork and re-typing.
What’s included
What we deliver
Pick what you need, or let us recommend a scope after a short discovery call.
iOS & Android apps
Customer-facing apps with accounts, notifications, payments, bookings and content.
Cross-platform development
React Native and Expo for a single codebase, native modules where performance or device access demands it.
Internal & field apps
Offline-capable tools for staff: checklists, capture, approvals and reporting.
Web applications
Browser-based apps and portals when installation is a barrier for your users.
APIs & integrations
Back-end services, authentication and connections to CRM, ERP, payment and messaging platforms.
Admin dashboards
The web tools your team uses to manage content, users and orders behind the app.
Store release
App Store and Google Play submission, store listings, test builds and release management.
Platforms & tools we typically use
- React Native
- Expo
- iOS
- Android
- Node.js APIs
- REST / GraphQL
- Push notifications
How it works
From first call to results
Step 1: Product definition
Users, core jobs, first-release scope and how success will be measured.
Step 2: UX & prototype
Flows and clickable prototypes tested before development starts.
Step 3: Build in sprints
Regular working builds on your own phone, so feedback is about real software.
Step 4: Test & release
Device testing, store submission and staged rollout.
Step 5: Support & iterate
Crash monitoring, OS updates and a roadmap shaped by real usage.
FAQ
Questions we’re often asked
Straight answers about mobile app development. Can’t see your question? Ask us directly.
Native or cross-platform?
For most business and customer apps, cross-platform with React Native and Expo gives near-native quality from one codebase at a lower build and maintenance cost. Fully native development is worth it for apps with heavy graphics, unusual hardware access or platform-specific experiences.
How much does an app cost?
It depends on features, integrations and design depth. After a short discovery we give you a fixed scope for a first release and an estimate for what comes after. We would rather ship a focused first version than a large app nobody has tested.
Do you publish the app to the stores?
Yes. We prepare builds, store listings and screenshots and handle submission to the Apple App Store and Google Play under your developer accounts.
Can the app connect to our existing systems?
Usually, yes — through APIs where your systems provide them, or through a small integration service we build. We check what is possible during discovery.
Works well with
Related services
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Your project is the missing tile.
Tell us what you’re trying to achieve. We’ll come back with honest advice, a recommended approach and next steps — whether or not we’re the right fit.