iOS and Android Mobile App Development
Cross-platform native apps from a single codebase. Integrated AI, full backend, from MVP to store publishing.
We design and build native iOS and Android apps from a single codebase with React Native and Expo. From concept to App Store and Google Play publishing: backend, on-device and cloud AI, authentication, in-app payments, push notifications and analytics included. A smooth, native experience on both platforms — one team, one budget.
- ✓A single codebase for iOS and Android: no two separate teams, roughly half the cost and time vs pure native
- ✓AI inside the app: from voice dictation to intelligent content interpretation and real-time personalized advice
- ✓Backend, auth, payments and notifications already integrated — the app is ready to scale from the first user
- ✓Real case: Lottomatik.ai, an iOS+Android companion app with voice AI and an ML backend, built entirely by us
Type, timeline, pricing and stack
| Project type | iOS + Android apps, from MVP to full product, mobile companion of existing web platforms |
|---|---|
| Typical timeline | 6 to 16 weeks depending on features, backend and AI integrations |
| Price range | Mobile MVP from €18k · Full apps on quote |
| Typical stack | React Native, Expo, TypeScript, NativeWind, Supabase, FastAPI, FCM/APNs, EAS |
Related case studies
Frequently asked questions
Do you build for both iOS and Android or just one platform?+
Both, from a single React Native/Expo codebase: the same code produces the app for the App Store and Google Play. You save time and cost versus two separate native builds, while keeping native performance and experience on every device.
How much does it cost to build a mobile app?+
For a focused mobile MVP we start at €18k. Full apps with backend, AI and integrations scale with scope. After a 15-minute call you get a concrete range for your case, no commitment.
Can you integrate AI inside the app?+
Yes, it's our strength: conversational assistants, voice recognition (speech-to-text), ML/predictive models and personalized advice, on-device or via cloud. In Lottomatik.ai we integrated voice dictation and an AI engine directly into the app.
Do you also handle store publishing?+
Yes. We manage builds (EAS), certificates, App Store and Google Play listings, the review process and OTA updates. You follow the progress, we get the app onto the stores.
Have you already shipped published apps?+
Yes. Lottomatik.ai is an iOS+Android companion app built entirely by us, with an ML backend, voice AI, push notifications and authentication — from concept to the stores.
Who owns the app's code?+
You do. All the code lands in your private repository, no vendor lock-in. You can continue with us or hand maintenance to your internal team, with documentation and training included.
How we work
Our agency process in 5 steps
- 1
Discovery & Spec
We analyze goals, constraints and KPIs together with the client's product team. We define scope, deliverables and acceptance criteria before estimating — no estimates on fuzzy scope.
- 2
Architecture
We design the data model, external integrations and contracts between modules. No code before the map is clear: you save weeks of downstream refactor.
- 3
Iterative development
Short cycles with weekly client demos, dedicated branch per feature, continuous code review. Every release is production-ready, not a throwaway prototype.
- 4
Review & test
Automated tests, QA checklist, security and accessibility audit before release. No surprises in production, no incidents in the first 48 hours.
- 5
Deploy & handover
Production deploy, operational documentation and training for your internal team for full post-project autonomy. You can continue with us or hand off with no hidden dependencies.