Your business runs.Your bookkeeping now too.
I'm a tiler. For 30 years. And for 30 years I've been fighting the same chaos at the end of every month:
Where's that receipt from Bauhaus? The subcontractor still hasn't sent the invoice. Mileage log entries — don't exist. And the tax office wants the annual return — yesterday. Then you frantically look for an accountant, pay way too much in taxes and swear to yourself: Next year will be different. But it won't. Because the tools that exist weren't built for us. That's why, under the SIGMA LUXE technology project, I built a system that thinks like we do: simple, concrete and without unnecessary fuss.
Sound familiar?
- !End of month: hunting for receipts, sorting, swearing
- !Mileage log? Somewhere on a scrap of paper in the glove box
- !Subcontractor still hasn't sent the invoice with §13b
- !Tax exemption certificate expired — 15% deduction from the client
- !The accountant costs a fortune, and you still deliver half the data
- !In the end you pay more tax than necessary because nobody has the full picture
It's not laziness. It's a system that wasn't built for you.
Now you have BauFin!app — start saving your time.
Snap the receipt. Done.
No typing, no sorting. The Assistant reads everything — amount, date, category. You take a photo, BauFin!app does the rest.
Trips documented clearly.
Start, destination, kilometres, purpose — all in one app. BauFin!app helps keep trip records structured and traceable.
Invoice in 30 seconds.
Pick the client, enter the service, send. BauFin!app prepares the invoice data and supports PDF and e-invoice workflows.
Your money. At a glance.
What's coming in, what's going out, what's left. No spreadsheets, no formulas. A dashboard that shows you exactly where you stand.
Tax prep without the stress.
All receipts, trips and invoices are already there. DATEV export, EÜR generator and GDPdU export help with tax audits. The Savings Check checks 21 optimization rules for construction trades in Germany and prices the full report transparently: 15 € per active rule. Your accountant gets cleaner data and a concrete question list.
“I built BauFin!app because I needed it myself. Not as a developer — as a tiler who just wanted peace from paperwork.”
The ERP system for construction, services and fleet.
An ERP is not about the number of features — it is about your company data and processes being connected in one system.
Your technician drives to the customer.
The trip is recorded automatically.
The working time goes into the job.
Vehicle costs land on that same job.
The invoice goes out — fully documented.
One action. Five modules. Never typed twice.
ERP + CRM + jobs + quotes + materials + time tracking + finance + documents + fleet + logbook — in one platform.
Compliant. Documented. Ready.
Three anchors for the construction site: data protection, accounting, building contract.
DPA, DPIA and processing register prepared. Tools for handling data subject requests in the customer portal.
Immutable storage, SHA-256, audit trail, archive for the statutory periods.
Interim, final and measurement invoices with the right clauses.
Self-declaration. Procedural documentation, DPA and templates available on request.
Handle requests from your customers yourself — with a tool, not a binder.
Your customer asks about their data? You see the request, the deadline and a prepared reply. The decision and the deadline stay with you.
Your customer asks
Through the customer portal — the request lands on your list, with a status.
You see the deadline
Deadline counter warning before the one-month limit runs out (Art. 12(3) GDPR).
You reply
Prepared texts for Art. 16, 17, 20 and 21 — full compliance, partial compliance or reasoned refusal.
- Included in the Customer Portal module at no extra cost
- Access requests under Art. 15: automatic data export when your customer asks
- One list of all requests with status and deadline counter
- BauFin!app does not answer on your behalf — this is not legal advice (§ 2 RDG)
For every trade on site and in service
BauFin!app is built for trade businesses — whatever your craft.
Tax 1.300 € instead of 8.300 € — 100% legal.
Five minutes of daily work with the program make the difference.
Check your jobs... Log your hours... Photograph the receipt...
That is all... BauFin!app does the rest. And you? Go for a beer, if you like...
21* tax optimisations. A mileage log without a single gap. Your tax return waiting, ready to sign.
1.300 € instead of 8.300 €.*
One platform. The entire business.
End the chaos.
BauFin!app is free to test. No credit card. No fine print. Just start.
Start for freeBauFin!app is a comprehensive ERP system for construction, service and trade businesses. It combines customer management, quotes, jobs, employees, finances, documentation, fleet management and electronic logbooks in one central platform.
