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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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WorkCentral:
About
WorkCentral connects the full freelance workflow in one platform — from quote to payment.
Most freelancers juggle separate apps for quotes, projects, time tracking, and invoicing, then spend hours moving data between them. WorkCentral eliminates that.
Write a quote with AI-drafted line items. Client accepts, project with tasks is auto-created. Track time, generate an invoice with one click. Clients pay online via Stripe.
Built by a CTO who freelanced for 15+ years and got tired of losing 5-6 hours a week to admin across five disconnected tools.
Features include AI quoting, automatic quote-to-project conversion, time tracking, smart invoicing with automated reminders, online payments, expense tracking, reports, and team management.
Free plan available. Early users get founder pricing — first year free, then 50% off for life.
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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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WorkCentral:
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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WorkCentral:
Audience
Freelancers, Consultants, and Project Managers
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Coretool:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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WorkCentral:
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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WorkCentral:
API
Offers API
Not Supported
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Coretool:
Screenshots and VideosNo images available
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WorkCentral:
Screenshots and VideosNo images available
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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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WorkCentral:
Pricing
$18/month
Free Version
Supported
Free Trial
Not Supported
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Coretool:
Reviews/
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WorkCentral:
Reviews/
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Coretool:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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WorkCentral:
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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WorkCentral:
Company InformationWorkCentral
Founded: 2026
United States
workcentral.app
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Coretool:
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WorkCentral:
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Coretool:
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WorkCentral:
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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WorkCentral:
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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WorkCentral:
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