Mobile & Web App Development

Vantino designs and builds mobile apps for SMEs and startups in Switzerland, from our base in Geneva. We build most of our apps with Flutter: one codebase for iOS and Android, near-native performance, and far lower build and maintenance costs than two separate apps. When a project needs it — demanding hardware access, deep operating-system integration — we go native (Swift, Kotlin).

A mobile app is more than its screens. We also deliver the backend and APIs behind it, authentication, push notifications, maps and geolocation, publishing on the App Store and Google Play, and the maintenance that keeps it working through every new iOS and Android release.

Plesion is an app for geo-located posts. Every post — a photo, a review, an announcement or a cultural event — is tied to a precise place. Users navigate the map to see what is happening around them, follow the places they care about, and get a feed that surfaces nearby posts and upcoming events. The app is live on the App Store and Google Play.

What Vantino built, from the idea to the first release and since:

• the Flutter app for iOS and Android: an interactive map that shows where activity is, a news feed, chat, push notifications;
• a cultural-events agenda fed automatically from 50 sources in six countries, including Geneva, Lausanne, Zurich, London and Paris;
• the microservices backend (full-text search, PostgreSQL/PostGIS for geographic queries, asynchronous messaging), migrated in 2026 from Java to Rust on Google Cloud Run: cold starts under 300 ms instead of 10–15 seconds.

Customer portals, business tools, SaaS platforms, back offices: we build custom web applications on proven technology — React, Vue, Nuxt, Next.js for the interface, Python (Django, FastAPI), Node, PHP (Symfony, Laravel), Java, Go or Rust on the server. The choice follows your context — in-house team, hosting, maintenance budget — not the framework of the month.

Every project is tested automatically, deployed through CI/CD and documented so that your team or another provider can take it over. To connect it with your existing systems, see our RESTful APIs; for hosting and operations, our DevOps offer.

1. Scoping. A workshop to define the users, the must-have features and the trade-offs: speed or durability, custom build or existing SaaS, Flutter or native.

2. First release (MVP). A usable app in the hands of real users as early as possible.

3. Iterations. Short sprints, with a demo at the end of each one.

4. Launch and support. Store release, monitoring, maintenance.

Projects are managed from Geneva and built by our Swiss-managed engineering teams in Europe, either as a managed project or with a dedicated team. See also what our clients say.

Describe your project in the form below: we come back with concrete next steps within a few days, not a 40-page proposal.