Software company in Düsseldorf, Germany AI, accessibility and websites for online shops and SMEs
Rhein Code is a software company in Düsseldorf, Germany. We bring AI into your online shop where it really helps, make shops accessible under Germany's BFSG, and build websites and shops – at fixed prices, with a direct line to the developer.
Or by email: [email protected]
Our focus
Three topics we concentrate on – because right now they make the biggest difference for online shops and small businesses.
AI for online shops
We find the task where AI really helps in your shop, build it in four weeks and look after it in operation.
- Free AI check (30 minutes)
- Fixed-price implementation sprint
- Operation, monitoring and improvements
BFSG package for online shops
Since 28 June 2025, many online shops in Germany must be accessible. We audit your shop, fix the barriers and document the result honestly.
- Audit of the key buying steps
- Fixes at a fixed price
- Statement and monthly monitoring
Websites & shops
Websites and online shops that load fast, get found and work for everyone – at a fixed price, with maintenance if you want it.
- Websites from €499
- Online shops from €1,499
- Maintenance from €29 a month
Selected projects
No mock-ups: platforms with real users that we designed, built and still run ourselves.
Vesty
Second-hand marketplace with its own apps
A Düsseldorf marketplace for second-hand fashion, books and collectibles – with Flutter apps for iPhone and Android, website, payments, shipping and moderation. Designed, built and operated by us.
Live on the App Store and Google Play
View project (German): Vesty
TrueAuto
Data-driven car portal for Germany
Technical data, prices, costs and reliability for more than 800 models, comparisons, an AI adviser and its own vehicle marketplace – data model, website and marketplace built and operated by us.
84 brands · 819 models
View project (German): TrueAuto
Everything from one partner
From a professional website to custom software: we deliver the complete digital craft that actually moves small and medium businesses forward — agency quality, at a fixed price.
Professional websites
From a digital business card to a complex company portal — fast, mobile-optimised and built to rank on Google.
Apps & web applications
Custom web apps, client portals and employee apps that fit your exact workflow — never an off-the-shelf template.
Online shops & e-commerce
Shopify, WooCommerce or fully custom — high-converting shops with secure payments and no ongoing commissions.
Automation & AI
Automate processes, replace Excel, connect systems and use AI where it makes sense — so your team focuses on what matters.
Booking & management systems
Online appointments, reservations and admin — commission-free, around the clock, integrated right into your website.
Local SEO & support
Get found on Google and in your Google Business profile — plus ongoing maintenance, updates and a direct contact.
Something else in mind?
Describe your project – you get an honest assessment and a fixed-price offer. We also build custom software, marketplaces and ERP systems.
What you can rely on
No surprises, no fine print — these standards apply to every project.
Fixed price, not open hours
A clear price before we start — in writing, with no hidden costs.
GDPR & accessibility compliant
Legally sound and accessible, with servers in the EU.
Agency quality
Clean code, secure architecture, CI/CD — like the big agencies.
No lock-in
Code, domain and data belong entirely to you.
Direct line to the developer
You talk to the pro who builds your project — no call center.
Support in DE · EN
Personal service in your language, from quote to support.
Transparent pricing
Fixed price before we start. All prices net, plus 19% German VAT. No hidden costs.
AI & BFSG for online shops
Packages for our focus topics. You get the fixed price for your project after a free first conversation.
AI check
€030 minutes, online: which task in your shop suits AI?
AI implementation sprint
from €1,490One AI solution in 4 weeks, at a fixed price
AI operations
from €99/monthOperation, monitoring and improvements
BFSG audit
from €590Check of the key buying steps against WCAG 2.1 AA, with report
BFSG implementation
from €990Fixing the barriers, fixed price after the audit
BFSG monitoring
from €49/monthMonthly check with a short report
Websites & shops
Starter Website
from €4991–3 pages, mobile-optimized, GDPR-compliant
Standard Website
from €9995–10 pages, blog, contact form
Online Shop
from €1,499Shopify or WooCommerce, DHL/Hermes, PayPal/Klarna
Booking System
from €990Online appointments, SMS/WhatsApp reminders
Optional maintenance from €29/month (updates, backups, small changes).
You get a concrete quote after a free first consultation – by email or video call.
Solutions & industries
From a practice website to custom software — we know each industry's typical needs and deliver in professional quality.
Online Shops
Build an online shop — sales-ready, GDPR-safe, without agency overkill
AI Solutions & Chatbots
AI for small businesses — chatbots & smart assistants that actually help
Process Automation
Automate your business processes — no more copy-paste and Excel chaos
Local Stores
An honest website for your local store
Custom Web Apps
Build a custom web app — exactly the software you need
Tradespeople & Emergency
Get found exactly when the customer needs you most
How we work
Four steps. No waterfall weeks, no endless meetings.
We talk first
Write to us via the contact form or by email – a free video call can follow if you like. We listen, you ask.
Concrete quote in 48h
Fixed price, scope, deadline. In writing. You decide in your own time.
We build in 2–4 weeks
You see progress every 3–5 days. We fix early, not at the end.
We stick around
Maintenance optional. You're never locked in — everything is yours.
Why Rhein Code?
Professional quality, clear prices, direct contact — without agency overhead.
Real people, not a call center
You speak directly to the developer building your project. No tickets, no account manager.
Two languages
Advice, contracts and support in German or English — whatever you need.
Fixed prices from the start
Clearly quoted, in writing, no hourly games. Whatever we agreed is what you pay.
Pro standards
Clean code, secure architecture, GDPR- & accessibility-compliant, EU servers. Like the big agencies.
No lock-in
Domain, hosting, code — everything in your name. You can switch any time.
From MVP to scale
We start lean and expand as your business grows — no expensive restart.
Frequently asked questions
What customers ask us most often before deciding.
What kind of projects do you take on?
Can I add features later?
Who owns the result?
How does billing work?
Do you work nationwide?
Free · no sign-up
Tools we built ourselves
E-invoicing and accessibility: validated with the official tools and free to use – the same standard we apply to client work.
Free tools
Try our tools — free, no signup, runs in your browser.
Compress images
JPG, PNG, WebP — up to 90% smaller without visible loss.
Open tool →Create XRechnung
B2B German e-invoices in minutes. Completely free.
Open tool →QR code generator
Free QR code generator — print and stick on the table.
Open tool →PDF tools
Merge, compress, convert PDFs to images — right in your browser.
Open tool →Let's talk
Tell us briefly about your project. We respond within 24 hours.
Prefer email? [email protected]