The agency
Months of alignment and big budgets — lots of planning before anyone actually uses your product.
From your app idea to your first paying customer — in weeks.
I turn your idea into a working first version fast — so you can see how the market reacts before you commit a big budget.
Wilhelm Löwe
App Developer & AI Engineer · Adalo Expert
25+ years in digital50+ app projectsBuilt by a founder, not an agency
Three common paths to your own app. None without a catch.
Building it yourself
Going solo means learning everything from scratch and making the same mistakes everyone before you did. In my experience, you rarely get there alone.
The cheap option
Cheap is tempting. But someone charging rock-bottom rates is usually building on the side or juggling a hundred other clients — and the moment real customers show up, it can all fall apart.
Fast, predictable and solid. Yes, you can have all three.
Fast because I've done this many times — not because I cut corners. You get something you can genuinely test, and that shows you the right next steps.
A first usable version in a few weeks
Not a clickable mockup — a real app, ready for real users.
A clear price with no agency markup
You know the budget before we start.
A partner with 25 years of experience
Not an experiment at your expense.
Prove it first, then scale.
01
First comes a lean initial version — fully functional, solid, and live in weeks. Real test users can actually work with it.
02
Once the first customers are ready to pay and the idea holds up, we build it out properly on your own infrastructure. That's when the bigger budget makes sense — not before.
Real apps. Real users.
From first beta to validated version to a platform with paying users.
Dein Leben, deine Spuren
Companion app for the book „Dein Leben, deine Spuren" (SCM Verlagsgruppe GmbH) with questionnaires for personal development.
www.deinespuren.online/- Launch
- 2025
- Customers
- 1500+
Betvisors
Sports-betting platform for a US startup: tipsters publish their picks, followers only pay when a tip wins — ‚Tip if it Hits'.
betvisors.com- Launch
- 2026
- Paying customers
- 700+
VermietPilot
Rental management for private landlords — properties, tenants and finances in one place.
vermietpilot.de/- Launch
- Beta in progress
- Customers
- 60+ test users
Losberger De Boer
Native iOS app for Losberger De Boer, the global provider of temporary building solutions — all technical drawings and datasheets, available on mobile anytime.
apps.apple.com- Launch
- 2026
- Customers
- 600+
I don't just build for founders. I am one.
Hi, I'm Wilhelm. I run several software products of my own — so I don't just know how to build an app, I know what it feels like to have one on the market: which decisions hurt later, what users really need, where it gets expensive.
That experience goes into every project.
What clients say about working together.
Wilhelm Löwe built a fully tailored solution for Losberger De Boer. His way of working is defined by structure, technical integrity and a relentless focus on results. Every meeting brought tangible progress.
Onno Koole
Former Head of Marketing·Losberger De Boer
Meticulous work, flawless execution — a strong partner for digital projects of any size.
Maximilian Schneiders
VP Marketing & Sales·McMakler, among others
A deep understanding of our users' needs, paired with creativity and technical excellence.
Rouwen Hirth
Founder·Constanze Care
Structured, solution-oriented, reliable — and always ready to go the extra mile.
Kai Scheunemann
Gerth Medien
Frequently asked questions.
What does it cost?
A first version usually starts in the low-to-mid four figures (EUR), larger projects cost more from there. There's deliberately no fixed price list — the range depends on what your project actually needs. If you want to scope it more precisely, a paid clarity check is a good entry point — credited toward any later project.
How does it work?
First a short intro call — we see whether I'm the right fit for your project. Then you get a clear plan with scope, timeline and price before we start building.
How fast will I have something?
Usually within a few weeks you'll have something real in your hands — fast enough to get real market feedback, instead of building in the dark for months.
What if I'm still at the very beginning?
Then a clarity check is often the best place to start. We look together at whether the idea has legs and where to begin — before you invest in a larger project.
Do you also work with companies and bigger teams?
Yes. I often work with companies and larger teams — just a bit differently than with solo founders: bigger projects, internal tools, different requirements. Drop me a line at loewe@adalion.de about what you have in mind, and I'll get back to you personally.
Get your idea in front of real customers.
No pitch, no commitment — we figure out what you need and what the next step looks like.
Book a free intro call