Software development in Mainz
Software development for Mainz and Rhineland-Palatinate: we replace spreadsheets and old systems step by step, with interfaces to what you already use.
- Build an appiOS, Android, web
- Software & platformPortal, marketplace, custom software
- AI & automationAgents, workflows, interfaces
- More customersSEO, Google Ads, Meta
- Content & social mediaShoot days, reels, channel care
- WebsiteCompany site, landing pages, shop
- First versionone clear use case
- Extensionextend an existing system
- Large projectseveral parts, many users
- Ongoing supportevery month, no end date
- I don't know yetwe will clarify it in the call
- As soon as possibleit is urgent
- In 1–3 monthsin the coming weeks
- Later this yearplanning ahead
- Just lookingno timeline yet
- Reply within 24 hours
- One contact for everything
- Code and data belong to you
One house, a team of experts. And everyone lends a hand.
Behind doubleudot are people from development, design, AI, marketing and film. For your project in Mainz we put together the team it needs and keep it until operation.
Our managing director Jonas Müller is not just a name on the offer. He sits in on the first call, makes the decisions with you and is available when it matters.
- Development
- Design
- AI
- Marketing
- Film
What we build for you in Mainz
Software that runs every day: portals, platforms and the admin behind them.
Portals and platforms
For customers, partners or your own team, in the browser.
Admin interfaces
Where your team maintains data, approves orders and sees the status.
Interfaces
Connecting shop, accounting, CRM or authorities.
Replacing old systems
Step by step, without a big-bang weekend.
Evaluations
Figures from your own data instead of copied tables.
Multilingual
For Germany, Austria, Switzerland and beyond.
Already running. Every day.
Before we build something for you, we have usually built it for ourselves. We run these platforms ourselves, with real customers, real payments and real support.
ZS24
De-register, transfer and register cars online. Nationwide, with identity check on the phone and a connection to the registration offices.
GEWA24
Register, change and de-register a business for every municipality. Official form, signature on the phone, sent to the responsible office.
ListNRide
Marketplace for bike rental across Europe. Booking, payment, insurance and payout to the rental companies.
Site-Kit
One platform for all client websites. Every client maintains their own site, new features arrive as a module for everyone.
How it works
Three steps to the start. At each one you know what comes next.
- 1
Describe your project
Three questions in the enquiry form, no specification needed. We get back to you with the right people for your topic.
- 2
Call and offer
By video or with you in Mainz. Then you get scope, schedule and offer in writing.
- 3
Build in stages
You see the state every week. What you approved goes live, and we stay on it afterwards.
Software development in Mainz: frequently asked questions
What others wanted to know before the first call.
What does Software development in Mainz cost?
That depends on the scope, not on the location, so we do not quote flat rates in advance. After the first call you get a written offer with scope and schedule before anything starts.
Do you come to Mainz?
We are based in Greiz in Thuringia and work for clients across Germany, Austria and Switzerland. Workshops and shoot days take place at your site; in between we coordinate by video.
Can you take over an existing system?
Yes. We look at the existing code first and then say honestly whether further development or a rebuild makes more sense.
Do you look after things after launch?
Yes. Maintenance, further development and channel care are available as ongoing work.
Also in Rhineland-Palatinate
We offer Software development across the region. These are the places around Mainz.
Software development in other cities: Berlin · Vienna · Hamburg · Munich · Cologne · Frankfurt am Main · Stuttgart · Düsseldorf · Dortmund · all locations A–Z
Your project in Mainz?
Three questions, then we get back to you with the right people.