rechnungswandler.derechnungswandler.de (Stefan Lausch)
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Related Products
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About
Coretool is a browser-based invoicing application for German businesses, freelancers, sole traders, tradespeople, and small service businesses. Users can create and manage quotes and invoices, including XRechnung and ZUGFeRD e-invoices, track customers, send payment reminders, and organize appointments. The app supports GiroCode QR codes, digital quote signatures, and validation of e-invoice documents through its REST API. API-based workflows can connect with automation tools such as Make, Zapier, and n8n; availability of some platform-specific modules may depend on approval. Calendar feeds can be added to Google, Apple, or Outlook calendars. The optional Kalkulations-Assistent supports project estimates, material and labor calculations, and quote creation. Coretool runs in a web browser without local installation. Its free plan allows three invoices per month; Solo costs €9/month plus VAT and can be canceled monthly.
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About
rechnungswandler.de is a browser-based e-invoicing tool for freelancers and small businesses, particularly in Germany. It converts invoice data entered in a form or extracted from PDF, Word, Excel and scanned PDF files into XRechnung or ZUGFeRD documents aligned with EN 16931. Users can review extracted fields and download the completed invoice; a viewer also opens and checks received e-invoices. Conversion and viewing run locally in the browser, so invoice files are not uploaded for these operations. Pro features include retaining the original document layout, batch conversion, saved customer details, reusable templates, payment reminders and validation reports. Optional AI assistance can suggest missing fields. Users can create invoices in the web form or adapt existing invoice files without installing desktop software. A free tier with usage limits and paid 24-hour, monthly and annual plans are available.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Businesses, freelancers and sole traders in Germany that need to issue e-invoices (XRechnung, ZUGFeRD)
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Audience
Freelancers, tradespeople and small businesses in Germany that need to send or receive e-invoices (XRechnung/ZUGFeRD) without buying accounting software
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Supported
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API
Offers API
Not Supported
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Screenshots and VideosNo images available
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Screenshots and VideosNo images available
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Pricing
€0/month
The free plan includes up to 3 invoices per month. Solo costs €9/month plus applicable VAT and can be canceled monthly.
Free Version
Supported
Free Trial
Not Supported
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Pricing
€2.99 one-time
Free plan: 5 conversions per day through October 31, 2026; 10 per month from November 1, 2026. The viewer remains free without a stated usage limit. Pro Pass: €2.99 once for 24 hours. Pro: €6.99/month or €59/year; subscriptions renew under their stated terms. Prices include VAT.
Free Version
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationCoretool
Germany
coretool.de/en
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Company Informationrechnungswandler.de (Stefan Lausch)
Founded: 2026
Germany
rechnungswandler.de
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Categories |
Categories |
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Integrations
n8n
Supported
Apple Calendar
Supported
DATEV
Not Supported
Google Calendar
Supported
Make
Supported
Microsoft Outlook
Supported
Zapier
Supported
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Integrations
n8n
Supported
Apple Calendar
Not Supported
DATEV
Supported
Google Calendar
Not Supported
Make
Not Supported
Microsoft Outlook
Not Supported
Zapier
Not Supported
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