SaaS product development: turn your expertise into a subscription business
wunderwerk builds your SaaS product: multi-tenant, with a trial period and billing – first version (MVP) in 4 to 8 weeks.
- Call now: +43 5354 20845
- 80+ projects
- 5.0 on Google
- Clients for 10+ years
- EU & GDPR first
- Directly with the managing director
Where does your SaaS product stand right now?
A good SaaS product doesn’t start with an app idea, but with a workflow that has proven itself and with customers who need it. We pick you up wherever you are.
“Other companies could use our in-house tool too.”
You have solved a workflow in Excel, Access or a home-grown application that your industry needs just as much. We turn it into a multi-tenant SaaS product with a trial period, subscription and user management that other companies subscribe to.
“Our know-how lies in consulting and services. We want to scale it.”
You advise, plan, inspect or calculate for your customers, always following the same pattern. As a calculator, planning tool or specialist application on subscription, you reach many customers at once, like the photovoltaic calculator SolarMaker with over 15,000 plans.
“We know the industry and its customers. What we lack is a development team.”
You have market access, your first pilot customers and a business model, but no development team of your own. We are your technology partner: concept, clickable prototype, MVP and operation from a single source, with experience in product, business model and sales.
“The prototype works, but billing, tenants and security are missing.”
A freelancer, a no-code builder or AI tools produced a first version that can’t carry paying customers. After a technical analysis, we add subscription billing, tenant separation, roles and permissions, monitoring and operation, or rebuild selectively.
What does a SaaS product really need?
A SaaS product is more than a web app with a login: for customers to sign up, try, pay and stay on their own, it needs multi-tenancy, a trial period and subscription billing, roles and permissions, self-service, integrations, and hosting and operation in the EU. wunderwerk plans these six building blocks into every SaaS project from day one.
How does your SaaS product come to life?
At wunderwerk, a SaaS product takes shape in five steps: initial consultation, concept with clickable prototype, MVP in 4 to 8 weeks, pilot customers, then operation and expansion. Every step has a tangible outcome and an effort estimate up front, and after each step you decide whether to continue.
- 1
Initial consultation
30 minutes with the managing director: workflow, target group, pricing model, existing systems. You get an honest assessment of whether the SaaS product will pay off, roughly what it will cost and where you should start. Free and non-binding.
- 2
Concept & clickable prototype
Together with your specialists, we clarify workflows, roles, tenants and pricing model and build a clickable prototype. With it, you can show the product to your first prospects before a single line of production code is written. Outcome: a roadmap for the MVP with an effort estimate.
- 3
MVP in 4 to 8 weeks
The first usable version with the core feature, login, tenants and trial period. You see progress every week, get test versions in your browser and give feedback directly. Scope determines effort; together we cut everything the first customers don’t need.
- 4
Pilot customers
The MVP goes to your first customers. Usage, feedback and metrics show what works and what customers pay for. In this phase, we expand subscription billing, onboarding and interfaces so that the product can be sold without manual work.
- 5
Operation & expansion
Hosting in the EU, monitoring, maintenance and support in live operation. We prioritise new features by what your customers use and ask for, until the MVP has become a product that lasts for years, like ziachfuchs.com, now in version 3.
AI writes code. We build software.
Thanks to wunderOS and our wunderFactory.
AI has opened up programming to everyone: anyone can put a prototype together today. Whether it turns into software that holds up in day-to-day operation is decided afterwards – in architecture, security, testing and maintenance over the years. That is exactly where prompting and real expertise part ways.
That is why we built our own operating system: wunderOS runs our company from sales to development. At its heart is the wunderFactory, where our AI agents, the wunderBots, build to the architecture rules, standards and tests from 20 years of software development – led by experienced software architects.
The result is software built noticeably faster and more affordably – in the quality you hire us for. We are AI experts and use that to get the best out of your project.
More software for the same budget
The wunderBots handle the routine work. You pay for architecture, decisions and results – not for legwork.
Live in weeks, not months
From the workshop to the first usable version, with changes after that in days. You see early on what works.
Quality is built in, not bolted on
Tests, reviews and security checks run automatically in the wunderFactory with every change – not just when there is time.
Architects, not prompters
The AI executes, we decide: data model, interfaces, operations. That way your software stays maintainable and extensible five years from now.
Bottom line: Bespoke software on terms that make sense for SMEs too – built with AI, with software architects accountable for it.
Thank you very much!
I will get back to you as soon as possible!
You can also book an appointment in my calendar right away: Book an initial consultation
A SaaS product is a business for years
Anyone who sells software on subscription promises their customers that it will still run tomorrow. That’s why wunderwerk doesn’t build throwaway software, but software that lasts: running, adaptable and operable for years.
For us as a small development team from Austria, this is not an extra option but standard practice: EU & GDPR first.
- Open technologies, clearly documented
Open, widely used technologies such as TypeScript, React, Next.js and Laravel, clearly documented. No per-user licence, no dependence on a no-code builder or a single developer.
- Operation for years
Monitoring, backups, security updates and support from a single source. We have looked after the learning platform ziachfuchs.com for more than ten years, now in version 3.
- Development driven by usage
New features arrive in short steps, prioritised by what your customers actually use and ask for, rather than by a wish list from day one.
- Hosting in the EU, GDPR-compliant
Operation in the EU, or in your own cloud on request. We plan data processing agreements, privacy policy and deletion concepts for you and your customers as part of the project.
SaaS products we have built and run
Among others, wunderwerk has built and runs these three SaaS products: a learning platform with over 30,000 users, a photovoltaic calculator with over 15,000 plans and business software for 24-hour care with a separate instance per customer.
Online learning platform ziachfuchs.com
Learning platform as SaaS: 3-month trial access, then a monthly or annual subscription. Over 30,000 users, a client for more than ten years, version 3 recently released.
“Whatever we wish for, almost everything is made possible, and the ongoing personal contact works brilliantly too.”
Matthias Fuchs, founder of ziachfuchs.com
Photovoltaic calculator SolarMaker
Web app for tradespeople to plan photovoltaic systems, run as SaaS: trial version, then subscription, automated billing, integrated sales funnel. Over 15,000 plans.
Business software for 24-hour care
Complete management software for all workflows in 24-hour care, run as multi-instance SaaS with a subscription model: one instance per customer, one product.
Not just clients. Partners.
We focus on long-term partnerships. You stay flexible thanks to open standards and clear documentation.
What our clients say:
A selection of our client feedback.
★★★★★Many thanks for building and looking after our online learning platform.
We can wholeheartedly recommend Christoph and his entire team.
Whatever we ask for, almost everything is made possible, and the ongoing personal contact works brilliantly too. Many thanks.
We run the online shop thecurtain.shop for made-to-measure curtains and Roman blinds.
Working with wunderwerk was excellent in every respect.
Thanks to their work, we can offer our customers an intuitive, professional shopping experience that perfectly reflects our craftsmanship. Many thanks for the great collaboration!
Very likeable wunderworkers! Fast, uncomplicated, competent and always ready to save the world!
Highly competent support. Well advised all round.
Chris knows how to solve a problem. Quality has a name: wunderwerk.io
We had the wunderworkers develop bespoke industrial software for creating recipes for a highly sensitive industrial process.
The collaboration was extremely professional from the outset: the team quickly understood our complex requirements, implemented them precisely and always paid close attention to maximum reliability and security. I would particularly like to highlight their technical know-how, clean documentation and fast response times for questions or change requests.
The recipe editor is now running in several plants in Sweden, Italy and the Czech Republic.
The software runs reliably, is intuitive to use and our customers are completely satisfied. We can recommend wunderwerk without reservation!
wunderwerk built a digital solution for my photography business that has been running stably and reliably for years. The support is top-notch, reliable and competent. I can only recommend them.
Christoph Niedermoser and his team impressed us with their professionalism, precision and reliability, both in the consulting phase and in the implementation that followed.
Our requirements were implemented perfectly, and the GPS tracking system has now been in successful use in several of our facilities for a number of years.
Chris and his team gave me superb advice on my app idea. Uncomplicated, fast and professional! Highly recommended!
We have already implemented and completed several projects together over the past few years.
Professional implementation and personal contact.
Highly recommended!
Perfect implementation of our
billiards platform.
A very pleasant collaboration. It was fun! Highly recommended!
🇦🇹 Funding check
Which funding fits now?
Planning a digitalisation project in Austria? KMU.DIGITAL, Austria’s SME digitalisation programme, no longer accepts new applications: its budget is used up, and it will not continue from 2027. As a KMU.DIGITAL Certified Digital Consultant (CDC), I show you in a free funding check which programmes fit your project now.
What we clarify in a free 15-minute call with the founder of wunderwerk:
- Whether your company and your project are eligible
- Which funding programme is currently open
- What you need to consider before applying
- Which costs are eligible
Important: The safe order is: application first, costs afterwards. Only the funding body can decide.
Why us?
What else is on your mind?
Many projects touch more than one topic. Here are the other areas in which we support businesses.
Ready for your own SaaS product?
Whether it’s an in-house tool, expertise or an industry solution: in a 30-minute initial consultation, we clarify whether your product will pay off on subscription, what the MVP looks like and what the first step costs.
Frequently asked questions about SaaS development
Your question isn’t listed? We’ll answer it directly with the managing director in a free initial consultation.
How much does it cost to have a SaaS product developed?
What a SaaS product costs at wunderwerk depends on its scope: the number of features, the tenant model, subscription logic, interfaces and the demands on design and user experience. That’s why wunderwerk doesn’t quote a flat price, but gives you an effort estimate before every step, and each step is commissioned separately. The first version (MVP) with the core feature, login, tenants and trial period is built in 4 to 8 weeks; subscription billing, onboarding and interfaces follow after the first pilot customers. Get an initial estimate with the cost calculator or in a free initial consultation.
How long does SaaS development take until the first paying customers?
At wunderwerk, a clickable prototype is usually ready within a few days, and the MVP with the core feature after 4 to 8 weeks. That is what your first pilot customers work with. Over the following weeks, we expand the trial period, subscription billing and self-service onboarding so that new customers can start and pay without manual work. A complete SaaS product then keeps growing over months, but is in use from the first version.
What does it take to turn expertise into a SaaS product?
Four things: a problem that many companies share, a workflow you know better than others, access to your first customers and an architecture that securely separates multiple customers (tenants). You bring the expertise, market access and business model; wunderwerk adds product and technology experience, multi-tenancy, subscription billing, trial period, user management, hosting and operation. An app idea without a target group and business model isn’t enough, and we say so openly in the initial consultation.
What is an MVP in SaaS development?
An MVP (minimum viable product) is the first usable version of your SaaS product with only the features your first customers need to experience the core benefit and pay for it. Instead of building everything for months, you test with manageable effort whether customers adopt the product, and only then invest in expanding it. wunderwerk develops MVPs for SaaS products and platforms in 4 to 8 weeks, with login, tenants and trial period from the start.
What does multi-tenant mean, and do I need it?
Multi-tenant means that several customers use the same software, but each sees only their own data, users and settings. For subscription software, this is the foundation: without tenant separation, you would have to maintain a separate installation for every customer. wunderwerk builds multi-tenancy, roles and permissions into the architecture from the first version, either as tenants in one application or, as with the business software for 24-hour care, as a separate instance per customer.
| Tenants in one application | Separate instance per customer | |
|---|---|---|
| Data | logically separated, one shared installation | own installation and database per customer |
| Updates | once for all customers | rolled out per instance |
| Fits when | many customers share the same workflow | customers need their own data storage or customisation |
How does subscription billing work in a SaaS product?
In a SaaS product built by wunderwerk, subscription billing runs automatically: wunderwerk integrates a payment provider and builds the trial period, monthly and annual subscriptions, invoices, upgrades, cancellations and payment reminders so that they run without manual work. On the learning platform ziachfuchs.com, new users start with a 3-month trial and then switch to a monthly or annual subscription; with the photovoltaic calculator SolarMaker, the trial version is followed by a subscription with automated billing and an integrated sales funnel.
We already have a first version built with Lovable, a freelancer or a no-code builder. Can you take it over?
Yes, after a paid technical and commercial analysis. wunderwerk reviews code, architecture, security, data protection and the rights to the source code, and shows whether the first version can be expanded into a SaaS product or whether a targeted rebuild is more economical. We see a quickly built prototype as a legitimate first step: it has shown that the product is needed. How this works is described under software takeover and modernisation.
How do we stay independent when we have a SaaS product developed?
Through open technologies and documentation. wunderwerk develops with widely used, open technologies such as TypeScript, React, Next.js and Laravel and documents architecture, interfaces and operation, so that your product doesn’t depend on a no-code builder, a per-user licence or a single developer. Hosting is in the EU, or in your own cloud on request. That way, your SaaS business stays able to act even when circumstances and requirements change.
Who runs the SaaS product after launch, and how is data protection handled?
After launch, wunderwerk keeps running your SaaS product: hosting in the EU, or in your own cloud on request, with monitoring, backups, security updates, maintenance and support from a single source. wunderwerk plans data processing agreements, privacy policy and deletion concepts for you and your customers from the start, so your product can be sold in line with the GDPR. New features arrive in short steps, based on what your customers use; that is how wunderwerk has looked after the learning platform ziachfuchs.com for more than ten years, now in version 3. See secure software development for how wunderwerk builds security in from the start.
Why wunderwerk as your SaaS agency?
Because we don’t just develop SaaS products, we have been running them for more than ten years: a learning platform with over 30,000 users, a photovoltaic calculator with over 15,000 plans and multi-instance business software on subscription. wunderwerk is a small, well-coordinated team of software architects, full-stack developers and AI engineers in Tyrol, Salzburg, Vienna and Berlin with over 20 years of project experience. We think business, product and technology together; you talk directly to the managing director and get concept, MVP development and operation from a single source.
Do you also work with companies in Germany and Switzerland?
Yes. wunderwerk is based in Tyrol, has further locations in Salzburg, Vienna and Berlin and works for companies in Austria, Germany and Switzerland; the initial consultation takes place online. In Switzerland, wunderwerk has been working for over ten years: it develops and maintains software for a Swiss industrial automation company that runs in several plants across Europe today. For Swiss companies: hosting in Switzerland or in the EU is possible, Tyrolean hourly rates in euros, kick-off and workshops on site at your premises, easy to reach by train. More on the page Software for Switzerland.