You write the invoice, BillUp turns it into a ZUGFeRD PDF. It looks like the invoices you have always sent and meets the requirements for e-invoicing at the same time. No account and no sign-up.
No sign-up · No email address · Your data stays on your device
BillUp writes ZUGFeRD: a PDF that looks like an ordinary invoice, and that at the same time contains machine-readable XML to the EN 16931 standard. Your customer reads it as a document, their accounting software reads it as a data record.
Since January 2025, every business in Germany must be able to receive e-invoices. BillUp is the simple way to send them.
Every document is validated before it is issued, against the official schema and against the calculation rules of EN 16931. What BillUp produces is a valid e-invoice.
A cleanly typeset PDF with your logo, address, tax number and bank details in the letterhead. It can be printed, forwarded and filed like any other invoice.
The same PDF carries XML to EN 16931, with amounts, tax rates, payment terms and bank details. The recipient's accounting system imports it directly.
Everything you need for a handful of invoices a month.
ZUGFeRD PDF with embedded XML to EN 16931, validated against schema and calculation rules.
No sign-up, no password, no email address. Install the app and get going.
Invoices, customers and logo are mirrored through your private iCloud. No third-party server stores invoice content.
Your customer scans the code with their banking app and the transfer is filled in for them.
Customers with search and an alphabet index. Entered once, reused every time.
An overview of outstanding and paid amounts, and revenue per month.
Any number of line items: units from pieces to hours, days, kilograms and metres.
Sequential invoice numbers: following your own pattern.
All tax categories: standard rate, small business under §19 UStG, reverse charge, intra-community supply, export and zero rate.
Delivery date & billing period: plus payment terms, due date, down payments, project and order number.
Your own letterhead: logo, address, tax number and bank details.
PDFs in the Files app: in the “Rechnungen” folder, so they are reachable without the app too.
Guided setup: on first launch your company details are entered step by step.
Light and dark appearance: the app follows your system setting.
For small businesses, freelancers, tradespeople, side businesses and solo self-employed. For people with a few invoices a month who don't want accounting software with a monthly fee and a learning curve.
Every finished invoice lands in the “Rechnungen” folder. You can reach them without BillUp, back them up or pass them to your accountant.
BillUp follows your system setting. Dark in the evening, light during the day, without you having to change anything.
An e-invoice is an invoice in a structured, machine-readable format defined by the EN 16931 standard. ZUGFeRD is the widely used German implementation: a PDF that looks like an ordinary invoice and that carries that XML inside it. The recipient reads it as a document, their accounting software reads it as a data record.
Since January 2025, every business in Germany must be able to receive e-invoices. Transitional periods apply to sending them. BillUp is the simple way to send them today. A ZUGFeRD PDF stays readable for every recipient, including those who cannot yet process the data.
No. No sign-up, no password, no email address. Install the app, enter your company details on first launch, and start writing.
On your device. Invoices, customers and logo are mirrored to your other devices through your private iCloud, and the finished PDFs additionally sit in the Files app in the “Rechnungen” folder. To generate the PDF, the invoice details are sent to our backend once. They are not stored there.
To create an invoice, yes, because the ZUGFeRD document is produced in our backend. Entering and looking things up works without a connection, and PDFs you have already created sit in the Files app and stay available.
Yes. BillUp supports the tax categories standard rate, small business under §19 UStG, reverse charge, intra-community supply, export and zero rate. The matching notes then appear on the invoice and in the XML as well.
A QR code on the invoice. Your customer scans it with their banking app and the transfer is pre-filled with recipient, IBAN, amount and reference. All they have to do is confirm.
No sign-up and no monthly fee.
