# iOS and Android app development > Native apps, PWAs and web platforms — from UX design to App Store and Google Play. AVOY, hoopit and Estetica Valeria are our builds. Page: https://www.studiojem.it/en/services/app-development/ An app your customers open every day, written by the people who designed it. An app is not a smaller website: it's a product. Users who come back daily, data to protect, payments to collect, notifications timed right. We build native iOS and Android apps, progressive web apps and management platforms — from UX design to the App Store and Google Play, all in one pair of hands. Since 2018, one fixed rule: every app starts from a real need, solved in the simplest possible way. If a feature isn't needed at launch, it doesn't make version one. That's how you contain costs, cut risk and launch while the idea is still current. ## What's included ### Native iOS and Android apps For performance, push notifications, camera, GPS or in-app payments, the answer is a native app on the stores. We develop cross-platform: one codebase for both, lower cost than two separate builds, an experience indistinguishable from pure native in nearly every case. ### Progressive Web Apps A PWA opens in the browser, installs to the home screen, works offline and skips the stores. For a digital menu, client portal or internal tool it's the rational choice: lower cost, instant updates, no store approval to wait for. ### Web apps and management platforms Bookings, stock, clients, shifts: when spreadsheets stop coping, we build the web app that holds your processes together — dashboards, roles, automations, reports. The right platform is the one your team uses without a manual. ### Backend, APIs and databases Data, rules, security. Clean APIs and architectures that handle growth: a hundred users to ten thousand without starting over. The data stays yours, on infrastructure you control. ### Integrations Stripe payments and subscriptions, WhatsApp Business messaging, OTA calendar sync via channel manager, maps, invoicing, existing CRMs. A good integration removes a manual task, it doesn't add another panel. ### Store publishing Developer accounts, graphic assets, ASO-optimised listings, Apple and Google review cycles through to approval. Details we've walked many times — we take them off your plate. ### Ongoing maintenance A published, abandoned app stops working: operating systems change, libraries age. Our plans cover updates, backups, monitoring and small monthly changes — the base for bigger releases as the product grows. ## Method The biggest risk in an app project isn't technical: it's building the wrong thing. The process finds that out before code — a PWA in 2–3 months, a full native app in 4–6. - **Discovery and scope** — The problem, not the feature list: who will use the app, when, to do what. We define version one — what's in, what waits — and put features, timelines and costs in writing before any commitment. - **UX and clickable prototype** — A prototype that feels like the finished app, put in real users' hands. Fixing a flow on a prototype costs hours; on a published app, weeks. - **Development in short releases** — Every two or three weeks you get a working version on your own phone, not a progress slide. Corrections happen while they're still cheap. - **Testing, stores, launch** — Real-device tests, edge cases, backend load, a beta with real users. Then both stores, with optimised listings. On launch day we're online with you. - **After launch** — The first months bring real usage data — and the real priorities. We monitor crashes, performance and behaviour, and turn them into a roadmap. ## What we build with Standard, documented technology — never exotic frameworks nobody will maintain in two years. Mobile is cross-platform with React Native; web apps and PWAs use React and TypeScript. Backends run on REST APIs, relational databases and managed cloud, with automatic backups and error monitoring from day one. Our integration experience is verifiable in the projects: recurring Stripe payments, WhatsApp Business automation, Mapbox maps, Airbnb and Booking calendar sync, multilingual AI assistants built into the product. The code is versioned, documented and yours — another team could pick it up tomorrow. React Native · React · TypeScript · Node.js · PostgreSQL · Stripe · Mapbox · WhatsApp Business · App Store · Google Play · Figma ## Use first, features later The mistakes in the briefs that reach us are almost always the same three, and none of them is about code. - **Wanting everything in version one** — Every extra feature stretches timelines, raises costs and delays the moment the app meets real users. Launch lean, grow on data. - **Choosing the technology before the problem** — "I want a native app" is often the answer to a question nobody asked. Sometimes the right call is a PWA at a third of the cost; sometimes a web platform with no stores. The use case decides. - **Forgetting the backend** — The interface is visible, the backend isn't — so plenty of quotes skip it, until the data doesn't hold up mid-project. We design it first: it has to last longest. ## How much it costs Our catalogue has clear line items: mobile app development, custom web apps and management platforms, Progressive Web Apps, plus a monthly maintenance plan after launch. The price depends on features, integrations and backend: that's why we write the quote after discovery, not before. If the project needs a public presence too, we connect it to the [website](/en/services/websites/) or the [e-commerce](/en/services/ecommerce/). ## FAQ ### How much does it cost to build an app? It depends on features, platforms, integrations and backend: a PWA or a web app costs less than a full native app and ships faster. The quote is free — describe the project at /en/quote/ and you get a written proposal with scope, timeline and costs. ### Native app or Progressive Web App — which is better? It depends on the use case. PWAs are faster and cheaper to build; native apps deliver better performance and full hardware access. We help you choose without over-engineering. ### Do you handle store publishing too? Yes, the whole process: asset preparation, store listings optimised for search (ASO), and publishing on the App Store and Google Play. ### What happens after launch? Apps need continuous updates for compatibility, bug fixes and new features — we offer ongoing support plans for exactly that.