Privacy Policy

Last updated: 01/10/2025

1. Who We Are

This website is operated by E4C Solutions (“we”, “us”, “our”).

Registered Address: 16, rue Cuvier – 69006 Lyon – France
Contact Email: someone

The technical maintenance of this website is provided by <Someone>, acting as a data processor on behalf of E4C Solutions.

2. What Data We Collect and Why

2.1 Account Information

When you create an account, we collect:

  • First name
  • Last name
  • Email address
  • Company name

Purpose: To provide you with access to our calculator service and manage your account.
Legal Basis: Performance of a contract (providing the calculator service you requested).

2.2 Calculator Input Data

When you use the calculator, you provide input data which we process to perform your requested calculations. We store your input data after the calculation is complete.

We store:

  • The input data
  • The resulting calculation output

Purpose: to perform the calculations you request, display the results, check the accuracy of the calculations in case of need (continuous improvement) should you request us to verify it, and contact you to try to make this project a real decarbonisation project together.
Legal Basis: Performance of a contract (providing the calculator service you requested).

2.3 Usage Notifications

When you trigger a calculation, we send an internal notification email containing your name (associated with your account) to E4C Solutions and the technical maintainer for monitoring and support purposes. This email does not contain the calculation input data itself.

Purpose: Service monitoring, technical support, and quality assurance.
Legal Basis: Legitimate interest in maintaining service quality and providing technical support.

3. How We Use Your Data

We use your data solely to:

  • Provide access to your account
  • Run calculations based on your inputs
  • Display calculation results to you
  • Communicate with you about your account or service issues
  • Communicate with you about a common project realisation

We do not use your data for marketing purposes.

4. Who Has Access to Your Data

Your data is accessible only to:

  • E4C Solutions (data controller)
  • someone (technical maintainer, acting as data processor)

We do not share, sell, or transfer your data to any third parties except as described in Section 5 below. 

E4C Solutions is responsible for the data collection. 

5. Third-Party Service Providers

We use the following service providers who process data on our behalf:

  • OVH (Germany) – hosting provider for our servers
  • Brevo – email service provider (SMTP)

These providers act as data processors and are contractually obligated to protect your data in accordance with GDPR requirements.

6. Where Your Data Is Stored

Your data is stored on servers located in Germany. Your data remains within the EU/EEA and is protected under GDPR regulations.

7. How Long We Keep Your Data

  • Account Information: Retained for as long as your account is active, plus 30 days after account deletion to allow for recovery.
  • Calculator Input Data: Input data is processed in real-time to perform calculations and retained after the calculation completes. The data is collected for a period of 5 years.
  • Calculation Output: Output data is processed in real-time to perform calculations and retained after the calculation completes. The data is collected for a period of 5 years.

8. Cookies

We do not use any cookies on this website.

9. Your Rights Under GDPR

You have the following rights regarding your personal data:

  • Right of Access: Request a copy of the personal data we hold about you
  • Right to Rectification: Request correction of inaccurate or incomplete data
  • Right to Erasure: Request deletion of your personal data
  • Right to Restriction: Request that we limit how we use your data
  • Right to Data Portability: Request your data in a structured, machine-readable format
  • Right to Object: Object to our processing of your data
  • Right to Withdraw Consent: Where processing is based on consent, you can withdraw it at any time

To exercise any of these rights, please contact us at: someone

We will respond to your request within one month.

10. Account Deletion

To delete your account and all associated data, use the page: https://presim.exerdry.com/account-deletion/. Account deletion can take up to 1 month.

11. Data Security

We implement appropriate technical and organisational measures to protect your data, including:

  • Secure server infrastructure with OVH
  • Encrypted data transmission
  • Access controls limiting who can view your data
  • Regular security updates

12. Complaints

If you believe we have not handled your data properly, you have the right to lodge a complaint with your local data protection supervisory authority.

For users in the UK: Information Commissioner’s Office (ICO) – https://ico.org.uk
For users in the EU: Find your authority at https://edpb.europa.eu/about-edpb/board/members_en

13. Changes to This Privacy Policy

We may update this privacy policy from time to time. Any changes will be posted on this page with an updated “Last updated” date. For significant changes, we will notify you via email.

14. Contact Us

If you have any questions about this privacy policy or how we handle your data, please contact us at:

Email: someone