Privacy Policy

This Privacy Policy explains how we handle personal data when you use NivaZero.

Controller / Contact

The controller responsible for data processing on this website is:

• Legal name: NivaZero Stefan Popescu
• Address: Goethestr. 9, 42553 Velbert, Germany
• Email: [email protected]
• Phone: +49 2053 4929330

What data we process

Depending on how you use the website, we may process the following categories of data:

• Simulation inputs/outputs: Numbers and parameters you submit to run a simulation (e.g., balances, rates, and settings). We use them to compute and return results.
• Contact messages: If you contact us through the contact form, we process the information you provide (e.g., name, email address, and message content) to respond.
• Server log data: Technical data that may be processed automatically when you access the site (e.g., IP address, date/time, requested URL, user agent, and error logs) for security and troubleshooting.
• Cookies / local settings: We use a language-preference cookie to remember your selected language, a session cookie when you use the contact form to store anti-abuse tokens needed to validate the submission, and browser local settings to remember choices such as theme or notice dismissal after you actively use those controls. If you switch the calculator between basic and advanced mode, we also store that preference in a first-party cookie. If an older language cookie is still present from a previous version of the site, we may also delete it during migration. These technologies are not used for advertising or cross-site tracking.

Purposes of processing

We process personal data for the following purposes (and, where applicable, based on the legal bases provided by data protection law such as the GDPR):

• To operate, secure, and maintain the website and provide the simulator functionality.
• To respond to inquiries and communicate with you.
• To prevent abuse, debug errors, and ensure service reliability.

Cloudflare

The domain nivazero.com is routed through Cloudflare, Inc. as a reverse proxy, DNS, and content delivery provider. When you access the website, Cloudflare may process technical connection data such as your IP address, request and response metadata, security events, and similar log data to deliver the site, cache static assets, and protect the service against abuse and attacks. We use Cloudflare on the basis of our legitimate interests in secure and reliable website delivery.

No analytics or advertising services

We do not intentionally share your personal data with third-party analytics or advertising providers. Our website fonts are served locally rather than loaded from a third-party font CDN. If we introduce additional third-party services in the future, we will update this policy.

Where data is processed

The origin server hosting this website is located in Germany. To deliver and protect the site, technical request data may also pass through Cloudflare network locations, which can involve processing in the EEA and in other countries where Cloudflare or its subprocessors operate, subject to applicable data protection safeguards.

Data retention

We keep personal data only for as long as necessary for the purposes described above, unless a longer retention period is required by law. Typical retention periods:

• Server logs: Up to 6 months (180 days), unless a longer period is required to establish, exercise, or defend legal claims.
• Contact messages: Up to 6 years (business correspondence), and up to 10 years if the message becomes tax/accounting relevant under statutory retention obligations.

Your rights

Where applicable (for example, under the GDPR), you may have rights regarding your personal data. These may include:

• Access to your personal data.
• Rectification of inaccurate data.
• Erasure of data (in certain cases).
• Restriction of processing (in certain cases).
• Data portability (in certain cases).
• Objection to processing and the right to lodge a complaint with a supervisory authority.

Security

We use reasonable technical and organizational measures to protect personal data. No method of transmission or storage is 100% secure.

Changes to this policy

We may update this Privacy Policy from time to time. The updated version will be published on this page.

Last updated: 15 Apr 2026