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📱 12 years experience — iOS, Android, React Native developer in Budapest

Mobile app developer in Hungary — iOS, Android & React Native, live in 6-12 weeks

Our mobile app development firm delivers Native iOS (Swift/SwiftUI), Native Android (Kotlin/Jetpack Compose), React Native and Flutter cross-platform stacks. Apple Developer + Google Play Console account setup, OTP SimplePay/Barion/Stripe HU/K&H payments, Apple Pay, Google Pay, OTP MobilePay, Firebase Analytics + push, biometric login, dark mode standard. NAV Online Invoice, EESZT, eMAG seller, GDPR/NAIH compliant. Fixed price in HUF, 12-month warranty, source code yours. Office: Budapest V and VI districts.

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✓ App Store + Play Store live in 6-12 weeks✓ Native + cross-platform — one team✓ 12-month warranty · source code yours
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Technologies & platforms we work with

Swift · SwiftUIKotlin · Jetpack ComposeReact NativeFlutterFirebaseApple Sign-InGoogle Sign-InOTP SimplePay · BarionStripe HU · K&HOneSignalSentryTestFlight + Play Console

What we build

From Native iOS to cross-platform — full mobile stack in-house

From Apple Developer + Google Play Console registration to App Store publishing, push notifications to in-app payment — everything in the package.

Native iOS (Swift / SwiftUI)

iPhone + iPad support, iOS 15+. Modern UI with SwiftUI, reactive flow with Combine. 100% aligned with Apple App Store guidelines — first-submit approval guaranteed. Apple Developer Hungary entity.

Native Android (Kotlin / Compose)

Android 8+ support, Material You 3.0 theme, 40% faster development with Jetpack Compose. Google Play Console, in-app billing in HUF, FCM push integrated.

Cross-platform (React Native / Flutter)

One codebase, two platforms — 50% cost savings. React Native (Expo + bare workflow) or Flutter Material/Cupertino. Native modules via bridge integration.

Backend API + cloud infrastructure

NestJS / Node.js REST or GraphQL API. PostgreSQL + Redis. Hungarian GDPR-compliant hosting (T-Systems / EzIT), or AWS Frankfurt / Hetzner. Firebase Realtime DB + Functions option. WebSocket for real-time.

UI/UX design + prototype

Clickable prototype in Figma, Apple Human Interface + Material Design compliant. Dark mode, dynamic type, accessibility (VoiceOver/TalkBack) standard. Animations via Lottie + Rive. Hungarian UX copywriting included.

App Store + Play Store publishing

Apple Developer account ($99/yr), Google Play Console ($25 one-time), Hungarian IBAN for App Store payouts. App icon, screenshots, ASO description in Hungarian, GDPR/NAIH privacy policy, in-app review prompt — all included. Free fixes if rejected.

How we work

From discovery to App Store launch — transparent, week-by-week

Fixed price in HUF, fixed timeline. Apple approval (1-3 days) + Google Play (hours) included. Free fixes if rejected.

  1. 1
    Week 0

    Free discovery + quote

    We discuss your business (60-90 min, Budapest V/VI district office or online). Target users, main 3 screens, native vs cross-platform, integrations (payment, maps, push, biometric) clarified. Fixed-price (Ft + 27% VAT), module-by-module quote within 3 business days.

  2. 2
    Week 1

    UI/UX design + prototype

    Clickable prototype in Figma. Apple Human Interface + Material Design 3.0 compliant. Dark mode, dynamic type, accessibility. We walk through screens, you approve. Animations via Lottie/Rive. Hungarian-language UX copy.

  3. 3
    Weeks 2-5

    iOS + Android parallel development

    Two teams in parallel if native (Swift + Kotlin). One codebase if cross-platform (React Native / Flutter). Cursor + AI tooling delivers 40% faster code. Weekly TestFlight + Firebase App Distribution builds — try on your phone.

  4. 4
    Weeks 5-6

    Backend + integration + QA testing

    NestJS backend, PostgreSQL DB, T-Systems / EzIT / Hetzner deploy. Payment (OTP SimplePay/Barion/Stripe HU SDK), push (OneSignal/Firebase), analytics (Firebase/Mixpanel), crash (Sentry). NAV Online Invoice integration if needed. UAT testing together.

  5. 5
    Weeks 6-8

    App Store + Google Play publishing

    Apple Developer account ($99/yr) and Google Play Console ($25 one-time) opened in your name. Hungarian IBAN for App Store payouts. App icon, screenshots, ASO description in Hungarian, GDPR/NAIH privacy policy. iOS approval 1-3 days, Android 2-8 hours.

  6. 6
    Ongoing

    12-month warranty + maintenance plan

    12 months of free bug-fix warranty. iOS/Android SDK upgrades (iOS 18, Android 15) included. 24/7 crash monitoring. New features in monthly sprints. Maintenance optional (Ft 30,000/hour ad-hoc or monthly plans from Ft 230,000/mo).

COUNTRY-SPECIFIC

Built for the Hungary Market

Local marketplaces, carriers, payment methods and compliance frameworks — from a single panel

Local Marketplaces

  • eMAG
  • Vatera
  • Árukereső
  • Alza.hu
  • Jófogás
  • MediaMarkt HU
  • Pepita.hu
  • Amazon.de
  • Zalando
  • Etsy
  • Temu

Carrier Integrations

  • Magyar Posta
  • Foxpost
  • Packeta
  • GLS HU
  • DPD
  • DHL
  • UPS
  • Express One

Payment Methods

  • SimplePay (OTP)
  • Barion
  • Stripe
  • PayPal
  • K&H mobilbank

Compliance & Legal

  • GDPR / NAIH
  • NAV Online Számla
  • EKAER
  • KEKKH
  • ÁFA %27
  • NAV Online Számla

Custom quote

Every mobile app is different — we build a custom quote

No off-the-shelf pricing. We listen, clarify screens, deliver a fixed-price (HUF Ft + 27% VAT, EUR reference at MNB rate) + fixed-timeline quote within 3 business days. The call is free, no obligation, NDA signed.

Included in every mobile project

Whatever the scope, the following ship as standard — no extra cost.

  • ✓Native iOS (Swift) + Native Android (Kotlin) — or React Native cross-platform
  • ✓UI/UX Figma design + clickable prototype in Hungarian
  • ✓Backend API (NestJS + PostgreSQL) + Hungarian GDPR-compliant hosting (T-Systems / EzIT)
  • ✓App Store + Google Play account setup (Apple $99/yr + Google $25 included)
  • ✓App Store + Google Play publishing (icon, screenshots, ASO, NAIH privacy)
  • ✓Push notifications (OneSignal / Firebase Cloud Messaging)
  • ✓Payment integration (OTP SimplePay / Barion / Stripe HU / K&H / Apple Pay / Google Pay / OTP MobilePay)
  • ✓NAV Online Invoice real-time integration (if B2C/B2B commerce)
  • ✓Analytics (Firebase / Mixpanel) + crash reporting (Sentry)
  • ✓Dark mode, dynamic type, biometric login (Face ID / Touch ID / Fingerprint)
  • ✓12 months free bug-fix warranty + iOS/Android SDK updates
  • ✓2-3 live training sessions for your team in Hungarian (recorded)
  • ✓Source code 100% yours — GitHub repo transferred
Süre6-12 weeks · depending on app scope
Garanti12-month free warranty + optional maintenance plan
Request free quote

What to bring to the discovery call

Bring these — we deliver an accurate quote in 60 minutes.

  • ✓Main 3-5 screens / core flow of the app (short notes — wireframes not needed)
  • ✓Target users (B2C / B2B / internal team) and estimated user count
  • ✓Native (iOS + Android separate) or cross-platform preference
  • ✓Integration needs (OTP SimplePay, Barion, EESZT, NAV, GLS/FoxPost, MÁV, Apple Pay, biometric)
  • ✓Existing backend / API in place, or shall we build?
  • ✓Target App Store launch date + estimated budget range (in HUF)

Free mobile app discovery call

Fill the form, we contact you within 24 hours. Free 60-minute call at our Budapest V/VI district office or online — no obligation, NDA signed.

Frequently asked questions

Native or React Native / Flutter — which should I choose in Hungary?

Native (Swift + Kotlin): Best performance + access to Apple/Google new features (Live Activity, App Clips, Material You). Recommended for: gaming, AR, video editing, projects with 1M+ users. Cross-platform (React Native / Flutter): 50% cheaper + one codebase + 2x faster development. Recommended for: MVP, e-commerce (eMAG seller, B2B), content apps. We recommend based on your scenario; if you don't need it, we won't say "go native".

Which payment SDKs do you integrate for the Hungarian market?

OTP SimplePay (the dominant Hungarian payment gateway) is standard. Plus: Barion (native Apple Pay + Google Pay), Stripe HU (international cards, SCA compliant), K&H mobile, Borgun, OTP MobilePay (peer-to-peer + B2C), PayPal. Apple Pay and Google Pay always in HUF. NAV Online Invoice real-time issuance on every transaction (mandatory since 2024).

How long is App Store + Google Play publishing?

Google Play: 2-8 hours after submit (usually live same day). Apple App Store: 1-3 business days after submit (Apple App Review). Account setup included: Apple Developer Program ($99/yr) and Google Play Console ($25 one-time). Account in your name, Hungarian IBAN for App Store payouts, 100% ownership yours. Free fixes if rejected.

How do you handle NAV Online Invoice and GDPR/NAIH requirements?

For every in-app payment, NAV Online Invoice real-time integration (mandatory since 2024). EKAER notifications for physical shipping. GDPR/NAIH compliant: Hungarian hosting (T-Systems / EzIT / Rackforest) option, cookie consent, App Tracking Transparency (iOS 14.5+), data processing notice in Hungarian, Cybersecurity Act incident handling. VAT 27% (highest in EU) auto-calculation.

Apple approval is strict — what's the rejection risk?

No issue. 23 of our last 24 apps were approved on first submit. We know Apple 4.0 (Design), 5.1 (Privacy), 2.5 (Performance) guidelines by heart. If rejected: based on error type, free fix (if code bug) or change-order quote (if content policy). Guaranteed.

Do you hand over source code or keep us locked in?

Code is 100% yours. GitHub repository transferred for free. You can continue with any other Hungarian mobile app developer or hire an in-house developer. App Store + Google Play accounts also in your name with Hungarian IBAN for payouts — 100% ownership. Vendor lock-in is not our model.

I want an eMAG seller partner app — do you build those?

Yes, eMAG Marketplace API integration (the largest HU + CEE marketplace) is our specialty. Seller dashboard on mobile: push order alerts, stock updates via barcode scanning, AWB printing via GLS/FoxPost integration, NAV Online Invoice auto-issuance, MNB EUR/HUF conversion. Vatera, Alza.hu, Árukereső, Extreme Digital, Pepita integrations also supported.

Maintenance pricing in HUF?

Monthly plans: Ft 230,000/mo (8 hrs) — minor fixes, app store updates; Ft 520,000/mo (20 hrs) — feature expansion + 24/7 monitoring; Ft 1,500,000/mo (60 hrs) — dedicated developer. Ad-hoc hourly: Ft 30,000/hr. VAT 27% extra. SLA: 99.9% uptime, critical bug within 4 hours, normal bug within 48 hours.

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Mobile App Development for Hungary

Smartphone penetration in Hungary is 85%+. Without a Magyar-language App Store HU and Google Play HU listing, organic discovery is weak. On top of that, Hungarian buyers trust SimplePay and Barion brand-recognition for mobile payments.

In-App Payment Stack

  • SimplePay Mobile SDK — native iOS/Android, PSD2 3DS2 SCA-compliant, IPN webhooks.
  • Barion Smart Gateway SDK — best for gaming and digital content (tokenisation, recurring, in-game store).
  • Apple Pay HU — live since 2019; supported by OTP, MKB, Erste, K&H.
  • Google Pay HU — wide card-issuer support.
  • Stripe Mobile — cross-border B2C fallback.

App Store HU and Google Play HU

The Hungarian App Store storefront prices in HUF, not USD. ASO requires Magyar keywords ("szállítás", "rendelés", "élelmiszer"). On Google Play HU, the standard is a Hungarian Listing plus five localised screenshots.

GDPR + NAIH Consent Flows

Apple's App Tracking Transparency and Android's Data Safety prompts must carry Hungarian justification copy. NAIH treats IDFA, IDFV and precise location as data requiring explicit opt-in.

Localisation and Magyar Typography

Hungarian characters (ő, ű, é, á, í, ó, ú, ö, ü) are well supported across mobile fonts; verify custom logo faces. Date format is 2026.05.22. (ISO-like with trailing dot), 24-hour clock, comma decimal separator.

Push Notifications & Deep Linking

Firebase Cloud Messaging with Magyar copy; OneSignal's Hungarian PoP for latency; Universal Links and App Links configured against the .hu domain via an AASA file.

Case: eMAG Marketplace + Mobile App

A Hungarian client mirrored its eMAG catalogue into a React Native app with push-driven flash deals — average order value rose 18%, while pushing external traffic into eMAG. Every invoice transmitted to NAV Online Számla in real time.

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