Mobile app development company in Belgium: iOS & Android apps, from idea to app stores
We build custom mobile apps that are smooth and easy to use, published on the App Store and Google Play. One codebase for iOS and Android, with AI built in wherever it saves you time.
Project types
- Customer app: bookings, ordering, loyalty
- Field app for your on-the-go teams
- MVP to test an idea or launch a startup
- Companion app for an existing website or SaaS
- App with a built-in AI assistant
In short
Ozapp is a mobile app development company in Belgium that builds custom iOS and Android apps with React Native, from design to app store launch. We work with SMBs, startups and large companies, adding AI only where it delivers real value. The result: one app, two platforms, and your customers just a tap away.
Why so many mobile app projects stall
- 01
Two platforms, double the budget
Building separately for iOS and Android doubles development and maintenance.
- 02
An app nobody opens
Without a simple flow and real everyday value, users uninstall within days.
- 03
Processes still on paper
Field teams re-enter information by hand, leading to errors and delays.
- 04
Strict app stores
Apple and Google review rules can block a poorly prepared launch.
iOS & Android app development built around real use
We start from what your customers or teams need to do in just a few taps. Then we build your iOS and Android app from a single React Native codebase. AI comes in wherever it makes life easier for the user.
Features
- iOS and Android in one projectA shared React Native codebase for both platforms and simpler maintenance.
- Native experienceInterfaces that follow Apple and Google guidelines, fast and intuitive.
- Built-in AIChat assistant, smart search, document recognition or personalized recommendations.
- Push notificationsReminders, confirmations and offers sent at the right moment to keep users engaged.
- Offline modeKey features work without a connection and sync as soon as the network is back.
- Connected to your toolsPayments, calendar, CRM, back office and APIs: your app plugs into your existing systems.
See it in action.
An interactive demo, right here on the page.
App development tailored to your industry
- 01
Fitness, wellness and leisure
Class or slot booking, memberships, in-app payments and automatic reminders.
- 02
Retail and restaurants
Mobile ordering, digital loyalty card and offer notifications.
- 03
Logistics and field services
App for your teams: routes, photos, e-signatures and real-time tracking.
- 04
Healthcare and personal services
Appointment booking, reminders and secure information sharing, GDPR-compliant.
- 05
Real estate and B2B
App for viewings, inspections or case tracking, synced with your back office.
- 06
Startups
MVP to validate your idea with real users before investing further.
How our mobile app development company works, in 5 steps
Step 101
Free consultation (30 min)
We clarify your idea, your users and the must-have features.
Step 202
Scoping and quote
First-version scope, timeline and a detailed quote within 24-48 hours.
Step 303
UX/UI design
Interactive mockups you can test before development starts.
Step 404
Development and testing
Regular testable builds on your own phone.
Step 505
Launch and iteration
App Store and Google Play submission, usage tracking and updates.
Technologies and integrations
- OpenAI
- Claude
- Gemini
- n8n
- Make
- Zapier
- Next.js
- React
- TypeScript
- Stripe
- App Store
- Google Play
- Firebase
- Mobile
- React Native, TypeScript · iOS and Android
- Publishing
- App Store (Apple), Google Play · test builds via TestFlight and Google Play Console
- AI
- OpenAI (GPT), Anthropic (Claude), Google (Gemini) · AI assistant, RAG on your own data
- Back end and integrations
- custom APIs, CRM, calendar, web back office (Next.js) · n8n, Make, Zapier
- Payments
- Stripe, Apple Pay, Google Pay
- Notifications and analytics
- push notifications (Apple Push Notification service, Firebase Cloud Messaging), usage analytics
Mobile app development FAQ
Another question? The simplest way is to talk: 30 minutes, no commitment.
The cost of a mobile app depends on its scope, which is why we work with custom quotes. The main factors are the number of screens and features, user accounts, payments, offline mode, built-in AI, the back office and integrations with your tools. After a free 30-minute consultation, you receive a detailed quote within 24-48 hours.
For most projects, cross-platform development with React Native is the best choice: one codebase for iOS and Android, a controlled budget and maintenance, and a near-native experience. Fully native development makes sense for very specific needs, such as 3D games or heavy hardware use. We'll recommend the right approach for your project.
It depends on the number of features and the integrations required. We often recommend launching a focused first version (MVP), then expanding it based on user feedback. Your quote includes a clear timeline, and you test interim builds throughout development.
Yes. We prepare and submit your app to the App Store and Google Play, including store listings, screenshots, compliance with Apple and Google guidelines, and review follow-up. The app is published under your own developer accounts, so you keep full ownership. We also manage store updates after launch.
AI makes your app more useful day to day. It can answer user questions through a built-in assistant, understand a photo or document, personalize recommendations or summarize information. We only add AI where it saves time or genuinely improves the experience.
Yes. We can make essential features available without a connection, such as viewing data, filling in forms or taking photos. Everything syncs automatically once the phone is back online. That makes it ideal for field teams working in basements, warehouses or rural areas with weak coverage.
Yes. We handle updates for new iOS and Android versions, bug fixes, monitoring and new features. The exact scope of ongoing support is agreed with you in the quote, based on how your app is used and how critical it is.
Yes. We build our apps in line with GDPR: access limited to the data that's needed, encrypted communications, and the app is hosted on European servers. You keep ownership of the app, its code and your data, and we only collect what the app genuinely needs to work.
Take it further
Artificial intelligence
AI agents & automation
AI agents that process your app's orders, requests and data behind the scenes.
Artificial intelligence
AI chatbot
An assistant that answers your users 24/7, in the app, on your website or on WhatsApp.
Have an app idea?
In 30 minutes, we'll turn it into a concrete plan: features, priorities and next steps. Detailed quote within 24-48 hours.