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© Cubicfox Kft. 2026 Budapest · Munich

Service · Mobile App Development

Ship to App Store. Both platforms.

One codebase. Two platforms. Infinite possibilities. We build cross-platform apps that feel native, powered by AI to ship faster than traditional development — without compromising on quality or user experience.

Build your app → See our apps
📱
React Native & Flutter
Cross-platform with native performance — one team, one codebase, iOS & Android
⚡
AI-accelerated builds
AI-generated components, automated testing and faster iterations
🚀
Store-ready delivery
We handle App Store & Play Store submission — from build to live
Why mobile matters

Your users live
on mobile.
Your app should too.

Mobile isn't a second screen — it's the primary screen. Users spend 4+ hours daily on their phones, and they expect apps that are fast, intuitive and delightful. We build apps that meet those expectations, with AI helping us iterate faster and test more thoroughly.

Cross-platform development means you don't choose between iOS and Android — you get both, sharing a single codebase that cuts development time and maintenance costs in half. AI acceleration means we ship even faster, while human designers ensure the experience feels truly native on each platform.

2×
faster to market with cross-platform vs native development
60%
of users abandon apps that take longer than 3 seconds to load — we optimise for speed
4.8★
average App Store rating our apps achieve — quality that users notice
1code
base for iOS and Android — maintain once, deploy everywhere
Our process

Six steps.
From vision to App Store.

01
Product Vision & Strategy
Using our AI-accelerated discovery framework, we map your market, users and competitors. AI synthesises research data to help us define a product strategy that positions your app for success from day one.
02
Engaging UX/UI Design
Our designers craft interfaces that feel native to each platform while respecting your brand. AI helps us explore more design variations faster, so we arrive at the perfect user experience — not just a good one.
03
Prototyping & Testing
Before writing production code, we build interactive prototypes and test with real users. AI accelerates user testing synthesis, so we identify friction points and conversion opportunities before development begins.
04
Cross-Platform Development
Using React Native or Flutter, we build apps that share a single codebase between iOS and Android. AI-assisted code generation and automated testing speed up development while our engineers ensure pixel-perfect implementation.
05
Store Submission
App Store and Play Store approvals can be unpredictable. We know the guidelines inside out and prepare your submission package meticulously — screenshots, descriptions, privacy policies and everything else stores require.
06
Long-term Support
Launch is just the beginning. We monitor app health, respond to user feedback and keep your app current with OS updates and new device releases. AI helps us prioritise feature requests and identify issues before users report them.
Mobile Stack

Technologies we
master.

We choose the right technology for your product — whether that's cross-platform efficiency or native performance. Our stack combines battle-tested frameworks with cutting-edge AI tools that accelerate development.

⚛️
React Native
Cross-platform
💙
Flutter
Dart framework
🍎
Swift
Native iOS
🤖
Kotlin
Native Android
⚡
Expo
React Native toolchain
🔥
Firebase
Backend services
🌊
Supabase
PostgreSQL backend
📊
Mixpanel / Amplitude
Analytics
What makes us different

Mobile development at
AI speed.

Traditional mobile development takes 6–9 months for a full-featured app. Our AI-accelerated process cuts that in half — without cutting corners on quality. AI handles boilerplate code, component generation and test automation, while our team focuses on the user experience and architecture decisions that make an app exceptional.

🧩
AI-generated components
UI components, forms and navigation patterns generated from design specs — ready for customisation and polish.
🧪
Automated testing at scale
Unit tests, integration tests and UI tests generated by AI — catching edge cases across iOS and Android.
📱
Faster iterations
AI accelerates the build-test-fix cycle — what used to take days now takes hours, so we ship updates faster.
Selected work

Apps that live
in users' pockets.

Seiko Hungary
Software ecosystem for Seiko watches
App Dev UX eCommerce
Ultimate Budapest
Travel & booking app for Hungary's capital
App Dev UX UI
HuGo
Community app for Hungarians in the US
Mobile App Dev UX
Client reviews

We're your
5-star partner.

★★★★★
"When we had questions, we could reach out to them anytime. They were pretty flexible and always engaged."
Co-Founder, Munch
★★★★★
"Our company is very small but we felt that they took care of our project the same way as they do for big companies."
CEO, Naptarak.com
★★★★★
"They really engage with me, share ideas, and maintain a kind of personal relationship throughout."
Founder, Wholesale Distributor
★★★★★
"They've held my hand throughout the collaboration, not only on the technical side but also with project management."
CEO, VIMAGE
★★★★★
"They gave us the support, flexibility, and confidence through the whole project — even in the toughest times."
Head of Digital, Roxer
★★★★★
"They kept us updated and held meetings frequently. We always knew where we stood and what came next."
Co-Founder & CEO, Retail Business

Ready to go mobile?

Let's build your
app.

We'd love to hear what you're building. Our team will walk you through the mobile development process — and tell you honestly if we're the right fit.

Build your app → See our pricing