1. General Provisions
These Terms of Service (hereinafter "Terms") govern the general conditions for using the internet service available at d3calc.com (hereinafter "Service"), whose administrator and content author is Grzegorz Adamczyk (hereinafter "Administrator").
Use of the Service is voluntary, free of charge and constitutes full acceptance of these Terms.
2. Nature of the Service
The service d3calc.com is a free, educational calculator for visualising blood vitamin D3 levels.
The Service does not require registration, login or payment. It does not provide electronic services in a commercial sense and does not actively collect personal data for marketing purposes.
3. Copyright
The service d3calc.com, including its source code, calculation algorithms, graphic design and content, is the intellectual property of the author (Grzegorz Adamczyk) and is protected by copyright. All rights reserved.
Copying, reproducing or distributing code, algorithms or content without the author's written consent is prohibited.
4. Disclaimer (Important)
No medical advice: The content provided in the Service does not replace professional medical, psychological, therapeutic or legal advice. Decisions regarding physical and mental health should be discussed with a specialist.
Disclaimer for errors: The calculator is provided "as is". Despite careful development, the Administrator does not exclude the possibility of errors — factual, computational, programming-related or arising from advances in scientific knowledge. The calculator's results are estimates based on population models and do not account for individual health, genetic or medication factors. The Administrator is not liable for any damages arising from the use or inability to use the Service. The User bears sole responsibility for decisions regarding supplementation.
The Administrator is not liable for the content of external websites to which links in the Service may refer.
5. Final Provisions
The Administrator reserves the right to amend these Terms at any time. The current version is always available in the Service.
Matters not regulated by these Terms are governed by applicable law, in particular German law and the law of the European Union.