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Related Products
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Coretool:
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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E-Rechnung Pro:
About
E-Rechnung Pro is a browser-based e-invoicing tool for freelancers, small businesses and accounting professionals that need to prepare ZUGFeRD or Factur-X documents. Users can create hybrid PDF/A-3 invoices with embedded XML in BASIC, EN 16931 and EXTENDED profiles, convert existing PDF invoices into hybrid files with OCR-assisted extraction for scans, and validate ZUGFeRD, Factur-X and XRechnung documents against EN 16931 rules. A document area provides history, status and search for invoices and validation results. The service runs online without installation and supports English, German, French and Ukrainian interfaces. Users can review validation messages and download files for further handling in their existing workflows.
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Coretool:
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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E-Rechnung Pro:
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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Coretool:
Audience
Businesses, freelancers and sole traders in Germany that need to issue e-invoices (XRechnung, ZUGFeRD)
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E-Rechnung Pro:
Audience
Freelancers, small businesses and accounting firms in Germany and the EU that send or receive e-invoices.
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Coretool:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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E-Rechnung Pro:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Coretool:
API
Offers API
Supported
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E-Rechnung Pro:
API
Offers API
Not Supported
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Coretool:
Screenshots and VideosNo images available
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E-Rechnung Pro:
Screenshots and Videos |
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Coretool:
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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E-Rechnung Pro:
Pricing
€0/month
Beta access is free with unlimited invoice creation, PDF conversion and validation through December 31, 2026. After the beta, the Free plan includes up to 10 invoices per month and 10 validations per day. Pro is €19/month, and VIP is €49/month. Paid plans include a 14-day free trial.
Free Version
Supported
Free Trial
Not Supported
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Coretool:
Reviews/
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E-Rechnung Pro:
Reviews/
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Coretool:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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E-Rechnung Pro:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Coretool:
Company InformationCoretool
Germany
coretool.de/en
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E-Rechnung Pro:
Company InformationE-Rechnung Pro
Founded: 2026
Germany
zugferd.randomstar.org
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Coretool:
Alternatives |
E-Rechnung Pro:
Alternatives |
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E-Rechnung Pro:
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Coretool:
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E-Rechnung Pro:
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Coretool:
Categories |
E-Rechnung Pro:
Categories |
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Coretool:
Integrations
Apple Calendar
Supported
Google Calendar
Supported
Make
Supported
Microsoft Outlook
Supported
Zapier
Supported
n8n
Supported
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E-Rechnung Pro:
Integrations
Apple Calendar
Not Supported
Google Calendar
Not Supported
Make
Not Supported
Microsoft Outlook
Not Supported
Zapier
Not Supported
n8n
Not Supported
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Coretool:
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E-Rechnung Pro:
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