Invoices in one place
All invoices across all customers: what’s paid, what’s still open, what a year brought in. Import your bank statement and paid invoices are ticked off.
The Werkstattbuch is built for tradespeople who don’t want to sort through scraps of paper in the evening. You log hours on site on your phone, materials are deducted from the van stock – and at the end of the month you see what hasn’t been billed yet.
No payment details · Trial ends by itself · Your data stays in the EU


The start page shows what’s open: 32 hours at the hotel, 13 at the Muster family, not on any invoice yet. Plus materials below minimum stock and the projection of your annual turnover. One tap on the customer, and the hours and materials become the invoice.
All invoices across all customers: what’s paid, what’s still open, what a year brought in. Import your bank statement and paid invoices are ticked off.

The statistics calculate your effective hourly rate after materials, travel and travel time, the contribution margin and the material mark-up – and show which customer and which project earn the most and which the least.

You log hours, travel and materials where they happen. Even without signal in the basement – they upload as soon as the phone has reception again.

Real screens from the demo – tap to enlarge.









Try everything with sample data, nothing is saved.
Everything that goes with it, when you need it.
Every quote belongs to a project. You always see: 100 hours quoted, 50 used – with change orders, your real hourly rate and billing by quote or by time.
The workshop and every vehicle with its own stock of material and machines. Book machines into the van like material – inspection dates always in view.
On every working day the Werkstattbuch logs the trip there and back by itself – set per customer or project, travel time billed if you like.
Minimum stock, a shopping list without duplicates and selling prices suggested from your markup. Purchases land on the right item automatically.
Recurring maintenance with due dates and a flat fee – “done” means ready to invoice.
Pick “This year” or “Last month” once at the top – overview, statistics, invoices and logbook follow.
Set up your services and prices once, reuse them on every invoice and quote.
Record external work per job and pass it on.
Included in the Klein subscription: €9.99 a month – with all the private books. For the same price you also get the Haushaltsbuch, Depotbuch and the Vermieterbuch up to 5 units.
| Plan | Price | Haushaltsbuch | Werkstattbuch | Depotbuch | Vermieterbuch | Gastrobuch |
|---|---|---|---|---|---|---|
| KleinFor household, workshop, portfolio and a few flats. | 9,99 €a month | ✓ | ✓ | ✓ | up to 5 units | – |
| StandardFor landlords with several buildings. | 19,99 €a month | ✓ | ✓ | ✓ | up to 25 units, 3 logins | – |
| VerwaltungFor property managers and large portfolios. | 39,99 €a month | ✓ | ✓ | ✓ | up to 250 units, unlimited logins | – |
| GastrobuchFor restaurants, bars and hotels. | 19,99 €a month | ✓ | ✓ | ✓ | up to 5 units | ✓ |
All prices include VAT. 30-day free trial, no payment details – the trial ends by itself. After that cancel monthly; yearly is two months cheaper. Pay by card or PayPal.
For electricians, plumbers, carpenters, painters and all small businesses that want hours, materials and invoices per customer under control.
Yes – even without internet. Entries upload as soon as you have signal again.
€9.99 a month or €99.99 a year in the Klein subscription, with the Haushaltsbuch, Depotbuch and Vermieterbuch. The first 30 days are free.
Register in any book and use all the books for 30 days, including the Gastrobuch – without payment details. The trial ends by itself; then you choose a subscription and all your entries stay.
No. The books run in the browser – on Mac, Windows, iPhone and Android. On your phone you put each book on the home screen like an app. What you enter on your phone appears straight away on the computer, and without internet you simply keep working.
All in the same subscription, all with the same account.
No payment details. The trial ends by itself, and you can try all the other books during that time too.
Open Werkstattbuch