InvoiceLeadQuantum Liquid
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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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InvoiceLead:
About
InvoiceLead is a web-based invoicing and bookkeeping service for freelancers and small businesses in the United States, United Kingdom, Germany, France, and Switzerland, with an iPhone and iPad app. It creates quotes and converts accepted quotes into invoices, applies country-specific tax rules and e-invoice formats, tracks payments and overdue balances, and supports recurring invoices and payment reminders. Users can capture receipts and supplier bills for AI-assisted data entry, import bank statements for matching, and maintain double-entry books with balance sheets and income statements. Pro plans add tax-return preparation, multi-currency support, and automated reminder levels; users remain responsible for filing tax returns. InvoiceLead also includes project time tracking and an AI assistant that proposes actions for user confirmation. Documents can be generated in English, French, German, Italian, and Spanish.
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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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InvoiceLead:
Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Supported
iPad
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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InvoiceLead:
Audience
Small businesses and freelancers in the US, the UK, Germany, France and Switzerland.
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Coretool:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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InvoiceLead:
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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InvoiceLead:
API
Offers API
Supported
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Coretool:
Screenshots and VideosNo images available
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InvoiceLead:
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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InvoiceLead:
Pricing
€19/month
Free plan: €0/month with no time limit. Pro: €19/month or €190/year. Pro+: €39/month or €390/year. Prices are billed in euros, exclude VAT, and subscriptions can be cancelled at any time.
Free Version
Supported
Free Trial
Not Supported
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Coretool:
Reviews/
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InvoiceLead:
Reviews/
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Coretool:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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InvoiceLead:
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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InvoiceLead:
Company InformationQuantum Liquid
Founded: 2026
United States
invoicelead.io
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Coretool:
Alternatives |
InvoiceLead:
AlternativesNo Alternatives
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Coretool:
Categories |
InvoiceLead:
Categories |
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Coretool:
Integrations
Apple Calendar
Supported
Google Calendar
Supported
Make
Supported
Microsoft Outlook
Supported
Model Context Protocol (MCP)
Not Supported
Zapier
Supported
n8n
Supported
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InvoiceLead:
Integrations
Apple Calendar
Not Supported
Google Calendar
Not Supported
Make
Not Supported
Microsoft Outlook
Not Supported
Model Context Protocol (MCP)
Supported
Zapier
Not Supported
n8n
Not Supported
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Coretool:
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InvoiceLead:
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