☰

What I build for you

Custom software & web app development.

Web apps, customer portals, dashboards, internal tools — from the first idea to live operation, end to end with one developer. As a freelancer I build custom software on a modern stack (React, Supabase, WordPress) instead of a website-builder compromise. Fixed price or sprints after an intro call — remote worldwide, from Germany (CET).

01 — Development

Web apps & custom software

Concept & technical spec

UI/UX for complex workflows

React, Supabase & modern APIs

Secure database, login & roles

Maintainable & no lock-in

I don't assemble a click-path in a website builder, I build real software: cleanly structured code, a database that grows with you, and interfaces that make even complex workflows simple. Customer portal, booking system or internal dashboard — you get exactly the features your business needs.

A modern frontend (React) meets a solid backend (Supabase/WordPress) — fast, secure, and built so that you or your team can keep working on it later.

Need a native app instead of a web app? I build native iOS and Android apps too — more on iOS app development and what an app costs.

PROCESS

How I work

Concept & spec

We work out what you are building, who will use it and which features are core — and write it down as a clear spec before a single line of code exists.

Prototype

You see a clickable prototype early — screens and flows you can actually try, long before development starts.

Development

I build iteratively in short sprints — frontend, database and logic, properly tested and ready to show at regular intervals.

Launch & operation

Go-live and handover — after that I run, monitor and extend your software as your one fixed contact.

EXAMPLES

Selected projects

A look at projects I have delivered — from my own apps in the App Store to web tools and custom client sites.

Dr. Larissa Hornig

Addiction counselling

wwwery good apps

Indie iOS apps

Klaus P.

Music & podcast

Loopy Frida

Fashion & tailoring

Markus Palzer

Photography

Versicherungferienhaus

Insurance

See all cases →

02 — Operations

Hosting & secure operation

My own server in Germany

SSL, backups & GDPR

Monitoring & auto-updates

Personal support — no call center

Scales with your growth

Your software does not run in a vacuum — I host it on my own server in Germany, GDPR-compliant, with SSL, daily backups and monitoring. One provider, one invoice, one contact instead of being passed around.

03 — Performance & security

Built fast & secure

Fast load times & Core Web Vitals

Secure authentication

Roles & permissions model

Encryption & GDPR

Honest measurement (Lighthouse, logs)

Software that handles customer data has to be fast and secure. I build with proper authentication, a thought-through roles and permissions model and optimized load times — and I measure it honestly instead of just claiming it.

Let’s talk →

04 — Ongoing development

Grow & maintain

New features & iterations

Security patches & updates

Daily backups + restore tests

Support & fast adjustments

Time and materials or retainer — flexible

Software is never "finished". After launch I keep developing your app — new features, adjustments to new workflows, ongoing maintenance. You have one fixed contact who knows your system inside out.

Custom software without the agency apparatus

One fixed contact — who also writes the code

Modern stack — React, Supabase, WordPress

You own the code — no lock-in, no forced subscription

You talk directly to the person who builds your software — no account manager, no handover through three departments. Short lines, plain language, and I explain every technical decision without jargon.

Over 40 projects delivered, from websites to my own apps in the App Store — as a freelancer I carry the responsibility alone, backed by 5.0★ from 42 Google reviews.

PRICING

What does custom software cost?

Scope	Investment	What you get
Automation / integration	from €2,500	Connect two systems, automate recurring workflows, keep data in sync — the fastest lever for less manual work.
Dashboard / internal tool	€6,000–18,000	Visualize data, model processes, roles & permissions — tailored to your team instead of spreadsheet chaos.
Web app / customer portal (MVP)	from €12,000	Login, database, the core feature — a usable product in weeks that you can build on step by step.
Large platform / SaaS	from €25,000	Multiple roles, billing, integrations and ongoing development — your digital product.

Guide figures for 2026 — freelancer rates without agency overhead. The binding scope is set after the free intro call, once the features are clear. If AI agents are meant to be part of the solution, the guide to AI agents and automation sorts out what holds up today and what does not. In detail: What does a website cost?

Frequently asked questions

What kind of software do you build?

Web-based custom software: web apps, customer portals, dashboards, booking and admin systems, internal tools and integrations. No classic desktop or embedded programs — but everything that runs in the browser and works with your workflows and your data.

What does custom software cost?

As a guide: an automation or integration from €2,500, a dashboard or internal tool at €6,000–18,000, a web app or customer portal (MVP) from €12,000, a large platform or SaaS from €25,000. The price depends on the features — I give you the binding scope after the free intro call. More on cost & budget

Which tech stack do you use?

A modern frontend with React, a secure backend with Supabase (database, auth, storage) or WordPress, plus integrations with the services you already use. All standard technology that your team or another developer can pick up later — no exotic lock-in.

Do I get the source code?

Yes. The code is yours — properly documented, in your repository. You are not tied to any provider or subscription and can carry on yourself or with another developer at any time.

How long does development take?

A first usable version (MVP) is often ready in a few weeks; large platforms take correspondingly longer. I work in short sprints, so you see real progress early and regularly instead of waiting months in the dark.

Do you work with clients in other countries?

Yes. I work remote worldwide, from Germany (CET). We run software projects over calls, shared access and regular demos — as a freelancer I am flexible and quick to reach.

Ready to turn your idea into software?

Get in touch, no obligation