Terms & Conditions

Last updated: 31 July 2026

1. Who we are

perfectsleepcalculator.com (the "site") is operated by Nouvelle Digital. You can reach us at nouvelledigitaladmin@gmail.com.

2. Agreeing to these terms

By using the site you accept these terms. If you don't accept them, please don't use the site. We may update these terms from time to time; the version on this page at the moment you use the site is the one that applies.

3. Not medical advice

This is the important one. The site gives general information only. It is not medical advice, a diagnosis, or a treatment plan, and it is no substitute for talking to a qualified healthcare professional.

• The calculator uses a simplified model — 90-minute sleep cycles and an average 15 minutes to fall asleep. Real sleep cycles vary between people and between nights, typically anywhere from about 70 to 120 minutes.
• The times shown are estimates for general guidance, not predictions of what your body will do.
• If you have persistent insomnia, excessive daytime sleepiness, suspected sleep apnoea, or any other health concern, please speak to your GP or a sleep specialist. Do not delay seeking medical advice because of something you read here.
• Never rely on this site to decide whether you are fit to drive, operate machinery, or do anything else where tiredness could put you or others at risk.

4. Using the site

You may use the site freely for your own personal, non-commercial purposes. You agree not to:

• use the site in any unlawful or fraudulent way, or for any harmful purpose;
• attempt to gain unauthorised access to the site, its server, or any connected system;
• introduce malware, or launch a denial-of-service or similar attack;
• scrape, mirror or systematically extract the site's content to build a competing service; or
• reproduce, republish or redistribute substantial parts of the site without our permission.

We may suspend or restrict access if we reasonably believe you have breached these terms.

5. Availability

The site is provided free of charge and on an "as available" basis. We don't guarantee it will be uninterrupted or error-free, and we may change, suspend or withdraw all or part of it at any time without notice.

6. Intellectual property

All content on the site — text, design, layout and code — is owned by Nouvelle Digital or licensed to us, and is protected by copyright. You may view it and print or download extracts for your own personal use, but you must not use it commercially without our written permission.

7. Our liability to you

Nothing in these terms limits or excludes our liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, or for anything else that cannot lawfully be limited or excluded.

Subject to that, and because the site is provided free of charge:

• we make no warranties, express or implied, about the accuracy or completeness of the information on the site;
• we are not liable for any loss or damage arising from your use of, or reliance on, the site or anything on it; and
• we are not liable for any business loss, including loss of profits, revenue, contracts, data or goodwill.

If you are a consumer, these terms do not affect your statutory rights.

8. Links to other sites

Where we link to third-party websites, those links are provided for information only. We have no control over their content and accept no responsibility for it.

9. Privacy

How we handle personal data is set out in our Privacy Policy and Cookie Policy, which form part of these terms.

10. Governing law

These terms are governed by the law of England and Wales, and the courts of England and Wales have exclusive jurisdiction. If you live elsewhere in the UK, you may also bring proceedings in your own country's courts.