Software engineering from Switzerland
Software
that holds up.
We build software for Swiss businesses – and check whether your AI-built app is ready for market.
One-page verdict
Booking app “Termino”
- Runs reliably Yes
- Scalable With conditions
- Ready to sell Not yet
Roadmap – next steps
- MUST Remove API keys from the code
- MUST Automated database backups
- SHOULD Tests for the payment flow
Two paths to software you can rely on.
Reviewed by pros. Built something with Cursor, Lovable or Claude? We’ll tell you honestly whether it holds up – and what it takes to sell it. Go to AI Check → Software development From idea
to running application. Custom web applications, integrations and ongoing development – planned, built and operated in Switzerland. See services →
How the AI Check works
Three phases. One clear verdict.
You choose your goal – runs reliably, scalable or ready to sell. We measure everything against it.
- 01
Quick Check
Code access and a 30-minute call. We review structure, dependencies and obvious risks.
- 02
Deep Dive
Experienced engineers analyse architecture, code quality, tests, operations, data protection and costs.
- 03
Report & roadmap
A report non-engineers understand: verdict, findings and prioritised actions with effort estimates.
Software development
We build what your business actually needs.
Web applications
Tailor-made applications – from customer portals to internal admin tools.
Integrations
Connections to ERP, CRM, accounting and external APIs – e.g. Bexio or Abacus.
MVP development
From idea to a first working version for your pilot customers – in a few weeks.
Rescue & growth
We take over existing – including AI-generated – software, stabilise it and extend it.
Java · PHP / Laravel · JavaScript / TypeScript · Vue · SQL · C#
Our work
Software we build and run ourselves.
Nxtra is a platform for car dealers and garages in Switzerland – developed by proapp. What we recommend to others, we put into practice here.
- Nxtra – Dealer Management System Vehicle inventory, sales, marketing, analytics and contacts in one tool – with a QR code and shareable link for every vehicle. View product
- Nxtra VIN Decoder Shows from the VIN which standard and optional equipment a vehicle really has – including technical data. View product
- Nxtra Vehicle Valuation Estimates a vehicle’s market value based on its actual equipment, condition and comparable market data. View product
Testimonials
What our clients say.
-
“We had the pleasure of working with Proapp on the development of an advisory app for researchers. Proapp proactively developed the application according to our requirements and successfully integrated it into our complex system. We are extremely satisfied with the final result and can wholeheartedly recommend Proapp GmbH without reservation.”
Remo Sprecher Strategic Research Platforms Project Manager, Universität Zürich -
“We used Claude Code to build a prototype for the real estate industry that was already working very well. Danilo thoroughly reviewed the entire codebase, made the necessary improvements, and gave us the confidence to scale our solution.”
David de la Poza Co-Founder, NOOANÇA Studios GmbH -
“We are a skilled trades business, and Proapp has developed a modern web platform for us that saves us a lot of work and streamlines our processes. The team understands what businesses like ours need – they are reliable, easy to work with, and always thinking one step ahead.”
Ricardo Carelle Managing Director, CR Holzdesign GmbH -
“We have been working with Proapp for over two years now, and we couldn't be happier. The collaboration has been professional, reliable, and genuinely enjoyable. What has impressed us most is their combination of outstanding technical expertise, clear communication, and a truly solution-oriented approach.”
Caryl Lauchenauer Co-Founder, RohnerTEC AG
Honest
We’ll tell you when something needs to be rebuilt. Better now than after launch.
Concrete
Every finding comes with an action and an effort estimate in person-days.
One partner
If you like, we implement the actions ourselves – nothing lost in hand-over.
About us
Real engineers, not just tools.
proapp is a software company from Bazenheid, Switzerland. We have been building web applications for Swiss clients for years – so we know what it takes for software to hold up in daily use.
Does your software
keep its promise?
Start with a Quick Check or tell us about your project in a short call.
- d.santagata@proapp.ch
- Phone
- +41 71 511 13 39
- Location
- Lindenackerstrasse 4a
9602 Bazenheid SG, Switzerland