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About this app

CTOOL: The Professional App for Electricians

CTOOL is an app for electricians designed to bring together all the essential tools for electrical professionals in one place.

Electrical calculations, standards verification, EV charging infrastructure tools, self-checks, PDF reports, customer management, and intervention tracking: CTOOL supports you directly on your job sites.

⚡ Electrical Calculations for Electricians

Save time on your calculations with the tools integrated into CTOOL.

In particular, you'll find tools to:

• Calculate cable cross-sections
• Calculate voltage drops
• Determine appropriate electrical protection devices
• Perform various calculations useful for your installations
• Quickly check your results directly from your smartphone

No more need for multiple tools to perform your routine electrical calculations.

📚 Electrical Standards at Your Fingertips

CTOOL makes it easier to find the information you need for your professional checks.

The application includes references to NF C 15-100 and applicable electrical installation standards.

The goal: to help you quickly find regulatory information when you need it in the field.

🔌 Tools dedicated to EV charging infrastructure

Do you install electric vehicle charging stations?

CTOOL includes features specifically designed for EV charging infrastructure professionals.

Includes:

• EV charging infrastructure inspection checklists
• Self-inspection checklists
• Tools for your charging station installations
• Tracking of your interventions

📄 Create your professional reports

CTOOL allows you to generate customized PDF reports from the information entered in the application.

Centralize your information and more easily produce professional documents for your interventions, inspections, and installations.

👷 Manage your clients and installations

CTOOL isn't just for electrical calculations.

The application also allows you to more easily manage your clients, installations, and service calls, centralizing the information essential to your business.

You can access your data and track your service calls from a single tool.

🛠️ An application designed for the field

CTOOL was developed based on the daily needs of electrical professionals.

The goal is simple: to offer an all-in-one application for electricians, practical to use on-site and capable of bringing together the necessary tools to:

Calculate • Verify • Control • Manage

Whether you're a freelance electrician, a self-employed electrician, or an EV charging station technician, CTOOL supports you in your daily work.

📱 An application to save time

Calculations, standards, controls, reports, and management: CTOOL lets you consolidate your professional tools in a single application.

Download CTOOL and simplify your daily life as an electrician.
The electrician's app: calculations, standards, EV charging infrastructure and site management
Updated on
Aug 9, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

What’s new

- Mise en ligne Officiel de Ctool
- Plein de future mise a jours sont a venir
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Everyone
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App support

About the developer
Jolly Christopher jacques bruno
christopher.jolly@c-a-dom.com
27 Rue du Patis 88130 Charmes France