Your Privacy, Simply Explained
We believe in transparency. This page explains exactly what data we collect, what we do not collect, and how we handle your information when you use our tools.
Contents
1Overview
SleepDebtCalculator.net (“we”, “our”, or “the site”) is a free, independent website providing sleep health tools and educational content. We are committed to protecting your privacy. This Privacy Policy explains how we handle information when you visit our website at sleepdebtcalculator.net and use our tools.
Short version: Our calculators run entirely in your browser. We do not require you to create an account, and we do not collect personally identifiable information through the use of our tools. The slider inputs you enter into our calculators are never transmitted to our servers.
2Data We Collect
When you visit SleepDebtCalculator.net, standard web server technology and analytics may automatically record the following non-personally-identifiable information:
| Data Type | What It Includes | Purpose |
|---|---|---|
| Server Logs | IP address (anonymised), browser type, operating system, referring page, pages visited, time and date of visit | Security, uptime monitoring, diagnosing technical problems |
| Analytics Data | Page views, session duration, device type, country (not city or precise location) | Understanding which tools are most useful so we can improve them |
| Email Contact | Your email address and message content, only when you voluntarily email us | Responding to your enquiry |
IP addresses collected in server logs are anonymised or aggregated and are not used to identify individual users.
3Data We Do NOT Collect
We want to be explicit about what we do not do:
- We do not require account creation or registration to use any tool on this site
- We do not collect your name, address, phone number, or any other personally identifiable information through the calculators
- We do not store the slider values, age selections, or any input you enter into our calculators on our servers — all calculations run locally in your browser
- We do not sell, rent, or trade your information to third parties for marketing purposes
- We do not use your data to build advertising profiles
- We do not send unsolicited emails or newsletters unless you have explicitly opted in
Our calculators are client-side tools. When you move a slider or select an age group, that action is processed entirely by your browser’s JavaScript. Nothing is sent to our server. Your sleep data stays on your device.
4Cookies & Local Storage
Cookies are small text files that websites store on your device. Here is how we use them:
Essential Cookies
We may use minimal session cookies necessary for basic website function (for example, remembering your preferences during a single visit). These are temporary and deleted when you close your browser.
Analytics Cookies
We may use analytics services (such as Google Analytics with IP anonymisation enabled, or a privacy-first alternative like Plausible Analytics) to understand aggregate traffic patterns. These tools use cookies to count unique visits. If we use Google Analytics, it is configured with anonymised IP addresses and no advertising features enabled.
Advertising Cookies
We do not use advertising cookies or any cookies for behavioural targeting or retargeting.
Managing Cookies
You can control and delete cookies through your browser settings. Refusing cookies will not affect your ability to use our tools — the calculators function entirely without cookies.
5Third-Party Services
Our website may use the following third-party services, each governed by their own privacy policies:
| Service | Purpose | Data Shared |
|---|---|---|
| Google Fonts | Loading the Lora and Inter typefaces used on this site | Your IP address and browser type are sent to Google’s servers to retrieve font files |
| Analytics (if active) | Aggregated page-view statistics | Anonymised visit data only — no personally identifiable information |
| Hosting Provider | Serving the website | Standard server log data (IP address, request time, page accessed) |
We do not embed social media tracking pixels, affiliate tracking scripts, or any third-party advertising scripts on this site.
Links to external websites (such as research citations) will take you to sites governed by their own privacy policies. We are not responsible for the privacy practices of external sites.
6Children’s Privacy
SleepDebtCalculator.net includes tools designed to calculate sleep needs for children (including infants, toddlers, and school-age children), as sleep health information is relevant to parents and caregivers of all ages.
We do not knowingly collect personal information from children under the age of 13. The tools on this site require no registration and collect no personal data, making them safe for parental use when calculating sleep needs for their children.
If you believe a child under 13 has somehow provided us with personal information, please contact us at sleepdebtcalculator@gmail.com and we will promptly delete it.
7Your Rights
Depending on your location, you may have rights under applicable privacy laws (including GDPR in Europe and CCPA in California) regarding your personal data. Since we collect minimal data, these rights are straightforward to exercise:
- Right of Access: You may request information about any personal data we hold about you
- Right to Deletion: You may request deletion of any personal data associated with your email address if you have previously contacted us
- Right to Object: You may object to any data processing we carry out
- Right to Opt Out of Analytics: You can opt out of analytics tracking by using your browser’s “Do Not Track” setting or by installing a browser extension such as uBlock Origin
To exercise any of these rights, contact us at sleepdebtcalculator@gmail.com. We will respond within 30 days.
8Changes to This Policy
We may update this Privacy Policy from time to time. When we do, we will update the “Last updated” date at the top of this page. We encourage you to review this page periodically. Continued use of the site after any changes constitutes acceptance of the updated policy.
We will never make changes that reduce your privacy rights without prominently notifying visitors on the site.
Privacy Questions?
If you have any questions about this Privacy Policy, our data practices, or want to exercise your rights, please contact us directly. We aim to respond to all privacy enquiries within 30 days.
📧 sleepdebtcalculator@gmail.com