Custom App Development for iOS and Android
We turn your idea into a working app: iOS, Android, or cross-platform. Includes UX/UI design, backend, API integrations, push notifications, rigorous QA, and publishing on the App Store and Google Play. Code ownership, standard NDA, and post-launch support.
A mediocre app = negative reviews and immediate uninstalls.
Mobile users are ruthless: if the app is slow, buggy, or has a confusing UX, they uninstall it within 30 seconds. You need intuitive design, excellent performance, and rigorous testing. It's not enough to 'make the app work' - it must work perfectly.
- UX/UI Design Included: Wireframes, mockups, and an interactive prototype before coding.
- Custom Backend & APIs: Server, database, integrations: all developed entirely from scratch.
- Store Publishing: We manage App Store and Google Play submissions. ASO included.
Mobile App Development
Custom App Development for iOS and Android
We turn your idea into a working app: iOS, Android, or cross-platform. Includes UX/UI design, backend, API integrations, push notifications, rigorous QA, and publishing on the App Store and Google Play. Code ownership, standard NDA, and post-launch support.
A mediocre app = negative reviews and immediate uninstalls.
Mobile users are ruthless: if the app is slow, buggy, or has a confusing UX, they uninstall it within 30 seconds. You need intuitive design, excellent performance, and rigorous testing. It's not enough to 'make the app work' - it must work perfectly.
What Kind of Apps We Develop
We specialize in custom app development for B2B and B2C companies that need tailored solutions, not templates. Every project starts from scratch with dedicated UX/UI analysis.
B2B Internal Tool Apps
Apps for employees: order management, inventory tracking, field service, reporting. Integration with company ERP/CRM, SSO authentication, offline sync for areas without coverage.
Customer / Consumer Apps
Apps for your end customers: mobile e-commerce, loyalty programs, bookings, order tracking. Social login, personalized push notifications, in-app payments (Stripe, PayPal).
Mobile Marketplace
Multi-sided platforms: buyer + seller. Listing management, integrated chat, review system, payments with automatic fees, seller dashboard.
Booking & Delivery
Apps for bookings (restaurants, hotels, services) or delivery (food, grocery, courier). Real-time GPS tracking, order status notifications, driver/restaurant ratings.
Field Service & IoT
Apps for external technicians: job dispatch, checklists, digital customer signature, before/after photos. IoT device connection via Bluetooth/NFC.
Content & Community
Content-driven apps: mobile blog, video streaming, podcast, forum. Infinite feed, user-generated content, moderation, engagement analytics.
iOS, Android or Cross-Platform? When Each Makes Sense
The choice of technology stack impacts timelines, costs, and performance. Here is when we recommend each option.
Native iOS Apps (Swift/SwiftUI)
When to choose it: Your primary target is iPhone/iPad, you need maximum performance (gaming, AR, video editing), iOS-specific design (widgets, Face ID).
✓ Excellent performance • ✓ Full access to iOS APIs • ✗ iOS only • ✗ Double cost for Android
Native Android Apps (Kotlin/Jetpack Compose)
When to choose it: Your primary target is Android (e.g. B2B target with company Android devices), integration with specific Android hardware.
✓ Excellent performance • ✓ Full access to Android APIs • ✗ Android only • ✗ Double cost for iOS
Cross-Platform (React Native / Flutter)
When to choose it: Limited budget, you need both iOS and Android, content-based app (not gaming/AR), fast time-to-market. 90% of the code shared.
✓ One codebase = iOS + Android • ✓ Costs -40% vs native • ✓ Synchronized releases • ✗ Slightly lower performance in heavy tasks
Our recommendation: For startups/MVP → Cross-platform (React Native). For consumer apps with millions of users → Native. For standard B2B → Cross-platform works great.
iOS App Development for Businesses
iOS app development in Swift/SwiftUI is the right choice when your target audience is primarily iPhone and iPad, or when you need platform-specific Apple features: widgets, Face ID, Apple Pay, CarPlay, ARKit. Native iOS apps guarantee the best possible performance, full access to Apple APIs, and a user experience perfectly integrated with the operating system.
We develop iOS apps from the discovery and UX design phase all the way to App Store publishing, including managing the Apple review process and ASO optimization for store keywords.
Android App Development for Businesses
Android app development in Kotlin/Jetpack Compose is ideal for B2B targets with company Android devices, for apps with specific hardware integrations (NFC, barcode, peripherals), or when the target market is predominantly Android (e.g. Italy, where Android holds around 65% market share). Native Android apps offer optimal performance and full access to the Google ecosystem.
We handle the entire Android app development lifecycle: architecture, UX/UI, development, testing on real devices, and publishing on the Google Play Store with product listing optimization.
Typical Features (Tech Deliverables)
What does "turnkey" mobile app development concretely include?
- ✓UX/UI Design: Wireframes, high-fidelity mockups, design system (colors, fonts, components). Interactive prototype (Figma) before starting development.
- ✓Backend & API: Server-side (Node.js, Python, NestJS) with REST/GraphQL APIs for login, user data, business logic. PostgreSQL/MongoDB database.
- ✓Authentication: Email/password login, social login (Google, Apple, Facebook), password recovery, biometric authentication (Face ID, Touch ID).
- ✓Push Notifications: Firebase Cloud Messaging (FCM) for Android, APNS for iOS. User segmentation, scheduling, open-rate analytics.
- ✓In-App Payments: Stripe, PayPal, Apple Pay, Google Pay integration. Recurring subscription management if needed.
- ✓Maps & Geolocation: Google Maps / Apple Maps integration, real-time GPS tracking, geofencing, distance calculation.
- ✓Analytics & Crash Monitoring: Firebase Analytics, Mixpanel, Sentry for crash reporting. App usage dashboard, retention, conversion funnel.
- ✓Offline Mode: Local cache (SQLite, Realm), automatic synchronization when the connection returns. Essential for field service.
- ✓Web Admin Panel: Web dashboard to manage app content, users, moderation, statistics. Full CRUD without touching code.
- ✓CI/CD & TestFlight/Beta: Automated pipeline for build and deploy. Beta tester distribution (TestFlight iOS, Google Play Beta).
Backend, Database and API Integrations
A mobile app without a robust backend is an empty shell. We develop the entire server-side infrastructure.
Typical Backend Stack
- • API Server: Node.js (Express/NestJS), Python (Django/FastAPI), or Go
- • Database: PostgreSQL (relational), MongoDB (NoSQL), Redis (cache)
- • File Storage: AWS S3, Cloudinary for user images/videos
- • Authentication: JWT tokens, OAuth2, session management
- • Real-time: WebSocket (Socket.io) for chat, live notifications
Common Integrations
- • CRM/ERP: Salesforce, HubSpot, SAP, Zoho, Odoo
- • Payments: Stripe, PayPal, Braintree, Adyen
- • Email/SMS: SendGrid, Mailgun, Twilio
- • Analytics: Google Analytics, Mixpanel, Amplitude
- • Push Notifications: Firebase, OneSignal, AWS SNS
Working Method: Discovery → Design → Build → QA → Store
Step 1: Discovery (Week 1)
Workshop on business goals, target users, core features, competitor analysis. Deliverable: functional document, user stories, app sitemap.
Step 2: UX/UI Design (Weeks 2-3)
Low-fidelity wireframes, high-fidelity mockups, design system, interactive Figma prototype. Approve the design before starting development.
Step 3: Build (Weeks 4-12, in sprints)
App frontend + backend API development in parallel. Bi-weekly sprints with a working demo on TestFlight/Beta. Continuous feedback, dynamic backlog.
Step 4: QA & Testing (Weeks 12-14)
Functional tests, regression, performance (loading 10,000 items), device testing (iPhone 12,13,14,15, various Android), critical bug fixes. Beta testing with 20-50 real users.
Step 5: Store Publishing (Weeks 15-16)
Store asset preparation (icon, screenshots, description, ASO keywords), App Store + Google Play submission, review process management, public release. Post-launch monitoring.
Timelines and Costs (Main Drivers)
The cost depends on UX complexity, number of screens, API integrations, custom backend, and target platforms.
Factors that affect the quote:
- • Number of screens: MVP 10-15 screens vs complex app 50+ screens
- • Integrations: How many external APIs? (payments, maps, CRM, analytics, push)
- • Offline mode: Do you need local data synchronization? Increases complexity +30%
- • Roles and permissions: Admin, standard user, moderator → complex authorization logic
- • Real-time features: Chat, live GPS tracking, push notifications → WebSocket backend
- • Admin panel: Need a web dashboard to manage the app? +20% costs
Examples / Case Studies
Fashion E-Commerce App (B2C)
iOS + Android app for a fashion brand. Product catalog, wishlist, cart, Stripe payments, order tracking, personalized promo push. 15,000 downloads in 6 months.
Stack: React Native + Node.js + Shopify API. 4 months of development. Mobile conversion rate +35% vs web.
Technician Field Service App (B2B)
App for 200 external technicians: job dispatch, GPS navigation, inspection checklists, digital signature, before/after photos. Offline sync. ERP integration for automatic invoicing.
Stack: Flutter + Firebase + custom SAP API. 5-month project. -40% job completion time.
Local Services Marketplace
Two-sided platform: professionals offer services (plumbers, electricians), customers book. Integrated chat, payments with 15% fee, review system, moderation admin panel.
Stack: React Native + NestJS + PostgreSQL + Stripe. 8-month MVP. 500+ active professionals in 12 months.
UX/UI Design Included
Wireframes, mockups, and an interactive prototype before coding.
Custom Backend & APIs
Server, database, integrations: all developed entirely from scratch.
Store Publishing
We manage App Store and Google Play submissions. ASO included.
Mobile App Development Process
Discovery
Goals, target users, core features, competitor analysis.
UX/UI Design
Wireframes, high-fidelity mockups, design system, Figma prototype.
Build (Sprints)
App + backend development, bi-weekly demos on TestFlight/Beta.
QA & Store Publishing
Rigorous testing, beta testing, store submission, public release.
What the Service Includes
Why Invest in a Mobile App
Mobile is the first touchpoint for your customers. A well-made app increases engagement, retention, and lifetime value.
FAQ
Le Domande
Più Comuni
Abbiamo raccolto le domande più frequenti per aiutarti a capire come lavoriamo e cosa aspettarti dai nostri servizi.
The price depends on modules, integrations and starting data. The quote is a fixed price, after a 2–3 week analysis, with written timelines and scope. You can start with a single module. The first consultation is free. The quote includes UX/UI design, development, backend, QA, store publishing and 3 months of support.
Cross-platform (React Native, Flutter) if budget is limited and you need iOS + Android quickly. Native (Swift, Kotlin) if you need maximum performance (gaming, AR, video) or specific iOS/Android features. For 80% of B2B/B2C cases, cross-platform works perfectly.
Average app development: 3-4 months. Testing and beta: 2-3 weeks. Store submission: Apple review 2-7 days, Google 1-3 days. Total timeline: 4-5 months from kickoff to public release.
Yes, 100%. We develop the complete backend (Node.js, Python, NestJS), database (PostgreSQL, MongoDB), REST/GraphQL APIs, third-party integrations (CRM, payments, analytics, push notifications). Not just the frontend.
You do. We provide the complete source code (app + backend), Git repository access, and technical documentation. No vendor lock-in. You can continue development internally or with other providers.
Yes. It includes 3 months of post-launch support (bug fixing, minor tweaks). Then monthly maintenance SLAs, with written response times: OS updates (new iOS/Android), bug fixes, minor evolutions, crash monitoring.
Secure JWT authentication, mandatory HTTPS, sensitive data encryption (AES-256), GDPR compliance (privacy policy, consents, data deletion), OS permissions (location, camera, notifications) only when necessary. Pre-launch security audit.
Yes, recommended. MVP with core features (10-15 screens) in 2-3 months, with a fixed-price quote after the analysis. Release, gather real user feedback, metrics. Then gradual evolutions based on concrete data. Minimizes investment risk.
Google reviews from our clients
Esperienza molto positiva, operatori qualificati e personale efficiente. Consiglio!
Esperienza estremamente positiva. Ho trovato un team giovane, dinamico e molto preparato, capace di comprendere rapidamente le esigenze della mia azienda. Le strategie proposte si sono rivelate efficaci e ben strutturate, con un notevole miglioramento della nostra presenza online. Professionalità, puntualità e attenzione al cliente fanno davvero la differenza. Consigliatissimi!
Agenzia professionale, competente e sempre disponibile. Ottimi risultati e comunicazione impeccabile. Consigliatissima!
Con loro siamo passati da zero richieste online a un flusso costante di contatti qualificati. Per la nostra attività è stato un cambio enorme.
Se sei in Toscana e cerchi un'agenzia che ti porta veramente i risultati promessi devi veramente chiamare Nicola. Top agenzia!!!
Collaborazione davvero positiva. Professionalità, disponibilità e qualità del servizio
Dopo aver provato tante 3 agenzie diverse finalmente ho trovato qualcuno che si lega al risultato del cliente e che fa di tutto per raggiungerlo!!
Ottima agenzia, la consiglio vivamente!
FlowUpTec ci ha aiutato a ottenere decine di clienti in target e con alta capacità di spesa già nei primi mesi di collaborazione. Il sistema è stato concreto, ben strutturato e orientato ai risultati. Un ringraziamento particolare a Nicola per la disponibilità, la professionalità e il supporto costante. Consigliatissimi.
Ottima agenzia consigliati
Nicola trova sempre soluzioni brillanti ai problemi online, da quando collaboro con lui ho un bel flusso di chiamate e contatti.
nicola bravissimo mi hanno fatto aumentare il fatturato grandissimi
Ottima esperienza consiglio ❤️💎
I migliori per acquisizione clienti online, consigliati
Ero scettico: il mio vecchio sito non portava nulla. Dopo l’audit gratuito mi hanno mostrato cosa non funzionava e una demo del nuovo. In 30 giorni abbiamo chiuso 3 incarichi (cause di valore medio più alto rispetto al passato). Non tutto è arrivato subito, ma quando abbiamo sistemato le testimonianze e l’agenda online, i contatti sono diventati costanti.
FlowUp si è dimostrata una realtà seria e professionale. Ho apprezzato la loro rapidità nelle risposte, la disponibilità del team e l’attenzione con cui sono state gestite le mie richieste. Servizio efficiente, organizzato e sempre orientato a trovare la soluzione migliore. Esperienza molto positiva, la consiglio senza esitazione.
Molto cordiali e competenti
Il nostro team mobile
Sviluppatori mobile esperti che realizzano applicazioni iOS e Android ad alte prestazioni
Nicola Marchetti
CEO & Founder
Strategic vision and business development expert with 10+ years leading software projects.
Nimendra Nawanjana
Co-Founder & Chief Technology Officer (CTO)
Technical architect specializing in scalable systems and cloud infrastructure.
David Lavindu
AI & Machine Learning Lead
AI specialist with expertise in deep learning and intelligent automation solutions.
Nadun Konara
AI Developer
Machine learning engineer focused on computer vision and predictive models.
Premuditha Weerathunga
Data Engineer
Data pipeline architect building robust ETL systems and analytics workflows.
Kavindu Sachintha
Data Analyst
Analytics expert transforming complex data into actionable business insights.
Luca Franchi
Junior Software Developer · Machine Learning Specialist
Junior software developer with experience in machine learning, AI systems and intelligent automation solutions.
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