Quavon Development
Web app studio from Rosenheim, Bavaria

Web app development in Rosenheim — portals, SaaS and digital platforms

Quavon builds web applications for companies that need more than a static website — customer portals, internal tools, MVPs and SaaS products with Next.js, React and TypeScript.

Discuss a projectExample project: HC Inntal
Use cases

The web apps we build

From the first idea to a live platform — the right shape for each requirement.

Customer portals and extranets

Secure portals for your customers — login, document management, self-service functions and personalised views.

SaaS products and MVPs

From concept to a launchable product — with auth, billing, user management and everything a modern SaaS platform needs.

Internal tools and dashboards

Administrative software, reporting dashboards and workflows that digitise and automate your internal processes.

Booking and event systems

Online registrations, bookings, waiting lists and calendar integration — fully embedded in your website.

What is included

Everything a professional web app needs

We do not build prototypes that have to be replaced after a year. Our web apps are production-ready, scalable and GDPR-compliant.

  • User registration and secure login (JWT/OAuth)
  • Role-based access control (admin, user and so on)
  • Real-time database connection with PostgreSQL
  • Responsive design for desktop and mobile
  • Progressive Web App (PWA) — installable
  • REST API or GraphQL interface
  • Email notifications and webhooks
  • GDPR-compliant data handling
  • Monitoring and error tracking
  • Automated tests (end-to-end and unit)

Our reference project: HC Inntal

A full club administration app with an admin panel, player self-service, JWT authentication and a PostgreSQL database — a worked example of complex web app development in Rosenheim.

Next.jsPostgreSQLJWTDockerAdmin panel
Read the case study
FAQ

Common questions about web app development

What is a web app, and when do I need one?
A web app is a browser-based application with user accounts, a database and interactive features — more than a website, but with no native app-store download required. You need one when users are meant to sign in, enter data, manage it or exchange it.
What does a web app cost?
The effort varies considerably: a customer-facing web app with registration, a simple dashboard and core features is leaner than a mature platform with several roles and complex workflows. Purely internal tools without public registration sit below that again — see software development. So we do not work with flat prices: after the free first call you get a concrete quote with clearly separated blocks of work and a timeline to the first usable release.
How long does building a web app take?
A first usable version with registration and the core feature is typically ready after 6 to 12 weeks. Extensive portals with several roles and integrations run to 12 to 24 weeks. We set the schedule together after the first call.
How does a web app differ from an ordinary website?
A website presents information — a web app lets people interact, enter data and start processes. Web apps have authentication, databases, role permissions and often API connections.
Can the web app be used like an app on a phone?
Yes. We build Progressive Web Apps (PWA) that behave like native apps on mobile devices — with offline support, push notifications and installation to the home screen.
How secure are the web apps you build?
Security is part of the build, not a review at the end. We implement OWASP-aligned measures: secure auth (JWT/OAuth), protection against SQL injection, CSRF tokens, encrypted transport and regular dependency updates.
Can the web app be extended later?
Yes. We build web apps with a clean architecture and a clear API layer, precisely so you can add features, user groups or integrations later without rebuilding everything.

More of what we do:

SaaS developmentSoftware developmentWeb developmentWeb designNext.js developmentAll services
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Ready for your web app from Rosenheim?

Let us talk about how a web application built for your workflow could digitise your processes and make your offering scalable.

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