Web design & app development in Koblenz
Websites & apps forKoblenz.
I'm Marvin Hülsmann – web designer and Apple developer from Berlin. I design and build websites, landing pages and native apps for companies, freelancers and startups in Koblenz and across Rheinland-Pfalz.
Koblenz sits at the Deutsches Eck where Rhine and Moselle meet. For companies from the region I bring design and technology together into a coherent presence.
Free intro call- Based in
- Berlin, remote for Koblenz
- Reply
- within 24 hours
- Apps on the App Store
- 3
- Stack
- Next.js · React · Swift · SwiftUI
Services
What I build for Koblenz.
Web design & websites
Custom, responsive websites with Next.js and Tailwind – fast, accessible and optimised for Google. No page builder, no template.
App development for Apple
Native apps for iPhone, iPad, Apple Watch and Vision Pro in Swift and SwiftUI – from concept to release on the App Store.
SEO & local visibility
Technical search engine optimisation, structured data and performance so customers from Koblenz find you on Google.
Consulting & support
Honest advice, clear quotes and support after launch. You always talk to me directly – no agency loops.
Why me
Personal instead of agency.
Working together
From Berlin – for Koblenz.
Most of my projects run fully remote: video calls, a shared design board, transparent updates. For a kick-off or workshop I'm happy to come to Koblenz in person.
One contact
Design, development and support from one person. Short paths, fast answers.
Apple developer
Several of my own apps on the App Store – for iOS, watchOS and visionOS. I know how products get finished.
Fair & transparent
Fixed quotes without hidden costs. You always know what you get.
Attention to detail
Typography, motion, load time – I build things that feel as good as they look.
Process
How we work together.
Intro call
We talk for 30 minutes about your idea, goals and budget. Free and without obligation.
Concept & design
Structure, content and a design that fits your brand – before a single line of code is written.
Development
Clean implementation with a modern stack, live preview links and quick feedback rounds.
Launch & support
Release, search engine setup and support afterwards. I stay reachable.
FAQ
Common questions from Koblenz.
Do you also work on site in Koblenz?+
Yes. Most collaboration happens remotely via video call, but for a kick-off, workshop or photos I'm happy to come to Koblenz. I'm based in Berlin.
How much does a website in Koblenz cost?+
It depends on scope and features. After a free intro call you get a fixed quote without hidden costs – for a landing page as well as for a multilingual company site.
How long does a project take?+
A landing page goes live within days, a complete website usually takes two to four weeks. Native apps take several weeks to months depending on scope. You see progress continuously.
Do you also build apps for companies in Koblenz?+
Yes. I build native apps for iPhone, iPad, Apple Watch and Vision Pro in Swift and SwiftUI and guide you all the way to the App Store release.
Will my website be found on Google?+
Every website gets a clean technical foundation: fast load times, structured data, correct meta tags and mobile-first. Local visibility in Koblenz is part of the plan from day one.
Also near Koblenz
I work with businesses across Rheinland-Pfalz and all of Germany.
Next step
Ready for your project in Koblenz?
Tell me briefly what it's about – I'll get back to you within 24 hours.
Write an email
Free intro call