We have been building mobile apps since the early days of the App Store. 100+ native iOS and Android apps shipped and 500M+ users reached, from consumer products to enterprise tools. Built in Florence, used worldwide.
Native apps for iPhone, iPad and Apple platforms.
Swift and SwiftUI apps for iPhone, iPad and visionOS, designed around Apple's Human Interface Guidelines. We use the native frameworks, from Core ML to ARKit, so your app feels at home on every Apple device, and we take it all the way through App Store submission.
Kotlin and Jetpack Compose, the modern Android way.
Native Android apps written in Kotlin with Jetpack Compose, tested across the range of devices and screen sizes your users actually have. ML Kit for on-device intelligence, Material Design for a familiar experience, and Google Play publishing handled end to end.
One codebase, two stores, when it makes sense.
Flutter and React Native apps for products that need to reach iOS and Android quickly from a shared codebase. Because we build native apps too, we tell you honestly when cross-platform fits and when native will serve your users better.
From loyalty cards to field teams.
We have shipped loyalty and e-commerce apps for retail chains, supermarkets and fashion brands, companion apps for sports teams and streaming platforms, official apps for public institutions and internal tools for enterprise field teams. Every app comes with the backend, analytics and maintenance it needs to keep running.
Workshops to define users, features and priorities. You get a clear scope, a roadmap and a technical plan before any code is written.
UX flows and interfaces designed for iOS and Android conventions, validated with clickable prototypes.
Native or cross-platform development in short iterations, with regular builds on your device through TestFlight and Google Play testing tracks.
Store submission, release, analytics and crash monitoring, followed by maintenance, OS updates and new features.
We started building mobile apps in 2010, at the dawn of the App Store. Fifteen years later, it is still what we do best.
APPSTYX is a software house in Florence, Italy, founded by software architects and engineers. Our team covers iOS architecture, Android, cross-platform development, DevOps and cloud infrastructure, so the same people design, build and run your app. We have shipped apps used by millions and partnered with enterprises around the world.
Today we pair native development with AI integration and a cloud backend built to scale. We also build our own products, like MyPorter, an AI WhatsApp assistant for short-term rentals.
It depends on features, platforms, integrations and design complexity. A focused MVP costs far less than a full enterprise app with its own backend and integrations. After a discovery call we send a detailed quote broken down by feature, so you can decide what to build first.
It depends on scope. We work in short iterations, so you get a working build on your own device early and see progress at every step. During discovery we plan the roadmap together, including what goes into the first release.
Native apps (Swift for iOS, Kotlin for Android) give the best performance, the deepest access to platform features and the most polished experience. Cross-platform apps (Flutter or React Native) share one codebase across both stores and can reduce cost for simpler products. We build both, so we recommend what fits your product.
Yes. We design and build the APIs, databases and cloud infrastructure behind the app on AWS, GCP or Firebase, plus admin dashboards and integrations with your existing systems.
Yes. We handle store listings, review submissions and releases on both the App Store and Google Play, and we keep the app up to date with new iOS and Android versions after launch.
Yes. We start with a review of the code and architecture, fix what is critical, then continue development and maintenance, whether the app was built by another agency or by an internal team.
Via San Morese 9, 50019
Sesto Fiorentino (FI) Italy