ZervantZervant Oy
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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
Easy invoicing software for entrepreneurs. With Zervant you have a simple overview of all of your quotes and invoices. Automate your invoicing by creating quotes and invoices in just 60 seconds – add your customer, your product, hit send and you’re done! You can create an unlimited amount of email invoices for free.
However, should there ever be a time where you need additional tools such as mobile apps, time tracking, e-invoicing, paper invoices, payment reminders and more, we’ve got you covered. Just subscribe to our Premium plans with a 14-day free trial.
What our customers say about Zervant:
"It’s easy to track time for customers/projects and the hours are automatically transferred to the invoice correctly." - Joni Lehto, Grove Development
"Invoices are paid exactly on time, directly when the customers get the payment reminder" - Danny, DTS Service & Vertrieb
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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
Supported
iPad
Supported
Android
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
Small entrepreneurs
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
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 Videos |
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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
free / 8€ per month
A free version is available. A 3-tiered monthly / annual plan available including additional features such as mobile app, reminders, e-invoicing etc.
Free Version
Supported
Free Trial
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
Supported
In Person
Not Supported
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Company InformationCoretool
Germany
coretool.de/en
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Company InformationZervant Oy
Founded: 2010
Finland
www.zervant.com
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Categories |
Categories |
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Billing and Invoicing Features
Billing Portal
Supported
Contact Database
Supported
Contingency Billing
Not Supported
Customer Portal
Supported
Customizable Invoices
Supported
Dunning Management
Not Supported
Hourly Billing
Supported
Invoice History
Supported
Mobile Payments
Not Supported
Multi-Currency
Supported
Online Invoicing
Supported
Online Payments
Supported
Payment Processing
Supported
Project Billing
Supported
Recurring/Subscription Billing
Supported
Service Ticket Billing
Not Supported
Tax Calculator
Supported
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Integrations
Apple Calendar
Supported
Desktop.com
Not Supported
Google Calendar
Supported
Make
Supported
Microsoft Outlook
Supported
Zapier
Supported
n8n
Supported
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Integrations
Apple Calendar
Not Supported
Desktop.com
Supported
Google Calendar
Not Supported
Make
Not Supported
Microsoft Outlook
Not Supported
Zapier
Not Supported
n8n
Not Supported
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