InvoiceKoiFang Ventures Private Limited
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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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InvoiceKoi:
About
InvoiceKoi is an invoicing app for self-employed tradespeople, freelancers and small service businesses. It lets users create invoices, estimates and receipts; save client records and a price book; add business branding; and share documents as PDFs. Other features include time tracking, job details, recurring invoices and receipt scanning. Core invoicing and PDF creation work offline; AI features, cloud backup and payment collection require an internet connection. Paid subscriptions provide unlimited invoicing, and an Android app is available.
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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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InvoiceKoi:
Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Not Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
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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InvoiceKoi:
Audience
Self-employed tradespeople, freelancers and small service businesses.
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Coretool:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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InvoiceKoi:
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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InvoiceKoi:
API
Offers API
Not Supported
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Coretool:
Screenshots and VideosNo images available
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InvoiceKoi:
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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InvoiceKoi:
Pricing
$99.99/year
US solo subscriptions cost $99.99 per year or $9.99 per week. Prices and plan availability vary by country. Eligible new iOS subscribers may receive a free trial.
Free Version
Not Supported
Free Trial
Supported
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Coretool:
Reviews/
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InvoiceKoi:
Reviews/
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Coretool:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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InvoiceKoi:
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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InvoiceKoi:
Company InformationFang Ventures Private Limited
Founded: 2025
Singapore
www.invoicekoi.com
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Coretool:
Alternatives |
InvoiceKoi:
Alternatives |
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Coretool:
Categories |
InvoiceKoi:
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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InvoiceKoi:
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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InvoiceKoi:
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