Invoxo

Invoxo

Sektor Technologies OÜ
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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.

About

Invoxo is a professional invoicing platform for EU-based service businesses that invoice across borders. While generic invoicing tools leave VAT to the user, Invoxo automatically determines the correct tax treatment for every invoice — domestic, reverse charge, or OSS — with integrated VIES VAT number validation. Built for consultants, freelancers, agencies, and digital service providers operating across EU member states. Features include: automatic reverse charge detection for B2B cross-border transactions, destination country VAT for OSS digital services, multi-currency invoicing, products and services catalog, recurring invoicing, automated payment reminders, credit notes, immutable audit-ready tax records, and PDF export. EN 16931 compliant structured e-invoices available on the Business plan. 14-day free trial with full access on all plans.

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

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

Audience

Businesses, freelancers and sole traders in Germany that need to issue e-invoices (XRechnung, ZUGFeRD)

Audience

EU-based freelancers, consultants, agencies, and digital service providers who invoice clients across multiple EU countries

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

No images available

Screenshots and Videos

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

Pricing

€19/month
Free Version Not Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Coretool
Germany
coretool.de/en

Company Information

Sektor Technologies OÜ
Founded: 2026
Estonia
invoxo.eu

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Categories

E-Invoicing Supported

Categories

Billing and Invoicing Features

Billing Portal Not Supported
Contact Database Not Supported
Contingency Billing Not Supported
Customer Portal Not Supported
Customizable Invoices Supported
Dunning Management Not Supported
Hourly Billing Not Supported
Invoice History Not Supported
Mobile Payments Not Supported
Multi-Currency Supported
Online Invoicing Supported
Online Payments Not Supported
Payment Processing Not Supported
Project Billing Not Supported
Recurring/Subscription Billing Not Supported
Service Ticket Billing Not Supported
Tax Calculator Not Supported

Integrations

Apple Calendar Supported
Google Calendar Supported
Make Supported
Microsoft Outlook Supported
Zapier Supported
n8n Supported

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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Claim Coretool and update features and information
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