Privacy Policy

Introduction

At Sleep Calculator ("we," "us," or "our"), we are committed to protecting your privacy and being transparent about our data practices. This Privacy Policy explains how we collect, use, and safeguard information when you visit our website at calculatemysleep.org (the "Website").

We built Sleep Calculator with privacy in mind. Unlike many websites and apps, we don't require you to create an account, provide personal information, or sign in to use our tools. Our sleep calculators run entirely in your web browser, meaning your sleep schedule data stays on your device.

By using our Website, you agree to the collection and use of information in accordance with this Privacy Policy. If you do not agree with our policies and practices, please do not use our Website.

Information We Do NOT Collect

We want to be clear about what data we do not collect or store:

• Sleep times and schedules: Your bedtimes, wake times, sleep duration, and calculator results are processed entirely in your browser and are never transmitted to our servers.
• Personal identification: We do not collect names, email addresses (except when you voluntarily contact us), phone numbers, or physical addresses.
• Account information: We don't have user accounts, so there's no username, password, or profile data to collect.
• Health data: We don't collect, store, or process any health-related information beyond the calculations you perform locally.
• Location data: We don't collect precise geolocation information from your device.
• Payment information: Our service is free, so we don't collect any payment or billing information.

Information We May Collect

While we minimize data collection, some information may be collected in the following circumstances:

Automatically Collected Information

When you visit our Website, our hosting provider and analytics tools may automatically collect certain technical information:

• Log data: Your IP address (anonymized), browser type, browser version, operating system, referring URL, pages visited, and the date and time of your visit.
• Device information: General device type (desktop, mobile, tablet) and screen resolution for optimizing our display.
• Usage data: Aggregate, anonymous statistics about which pages are viewed and how users navigate our site.

This information is collected in aggregate form and cannot be used to personally identify you. We use this data to understand how our Website is used, identify technical issues, and improve user experience.

Information You Provide Voluntarily

We only collect personal information that you voluntarily provide to us:

• Contact form submissions: If you contact us through our contact page or email, we collect your email address and any information you include in your message. This is used solely to respond to your inquiry.
• Feedback and suggestions: If you send us feedback, feature requests, or bug reports, we may retain this information to improve our services.

How We Use Information

We use the limited information we collect for the following purposes:

• Website operation: To provide, maintain, and improve our sleep calculators and website functionality.
• Analytics: To understand aggregate usage patterns, identify popular content, and make data-driven improvements.
• Technical support: To diagnose and fix technical problems, optimize performance, and ensure security.
• Communication: To respond to your inquiries, feedback, or support requests when you contact us.
• Legal compliance: To comply with applicable laws, regulations, and legal processes.

Cookies and Tracking Technologies

Our Website uses minimal cookies and similar tracking technologies:

Essential Cookies

These are necessary for the Website to function properly. They enable core functionality such as remembering your preferences within a session. These cookies do not collect personal information and cannot be disabled.

Analytics Cookies

We may use analytics services to collect anonymous, aggregate information about Website usage. These cookies help us understand which pages are popular, how users navigate the site, and where we can make improvements. The data collected is statistical and does not identify individual users.

Managing Cookies

Most web browsers allow you to control cookies through their settings. You can set your browser to refuse cookies or alert you when cookies are being sent. However, disabling cookies may affect the functionality of some features on our Website.

Third-Party Services

We use a limited number of third-party services to operate our Website. These services may have access to certain information as described below:

Hosting Provider (Vercel)

Our Website is hosted on Vercel. When you visit our site, Vercel's servers process your request and may collect standard log information including IP addresses, browser information, and request timestamps. Vercel's privacy policy governs their handling of this data. Visit Vercel's Privacy Policy for more information.

Contact Form (Formspree)

If you use our contact form, submissions are processed through Formspree. Formspree receives the email address and message content you provide. We only use this information to respond to your inquiry. Visit Formspree's Privacy Policy for more information.

Future Advertising

We may display advertisements on our Website in the future. If we implement advertising, we will update this Privacy Policy to reflect any additional data collection or third-party services involved. Any advertising partners will be clearly disclosed.

Data Retention

We retain information only for as long as necessary to fulfill the purposes described in this Privacy Policy:

• Calculator data: Not retained - all calculations happen in your browser and are not stored.
• Server logs: Automatically deleted after 30 days.
• Analytics data: Retained in aggregate, anonymized form for up to 26 months.
• Contact form submissions: Retained for up to 2 years or until your inquiry is resolved, whichever is longer.

Data Security

We implement appropriate technical and organizational measures to protect the information we collect:

• HTTPS encryption: All data transmitted between your browser and our servers is encrypted using TLS/SSL.
• Secure hosting: We use reputable hosting providers with industry-standard security practices.
• Minimal data collection: The best way to protect data is not to collect it in the first place.
• Regular updates: We keep our software and dependencies updated to address security vulnerabilities.

While we strive to protect your information, no method of transmission over the Internet or electronic storage is 100% secure. We cannot guarantee absolute security, but we are committed to implementing reasonable safeguards.

Your Privacy Rights

Depending on your location, you may have certain rights regarding your personal information:

• Access: You can request information about what personal data we have about you (if any).
• Correction: You can request that we correct inaccurate information.
• Deletion: You can request that we delete your personal information.
• Portability: You can request a copy of your data in a portable format.
• Objection: You can object to certain types of data processing.

Since we collect minimal personal information, most of these rights may not be applicable. However, if you have contacted us and wish to exercise any of these rights, please email us at info@calculatemysleep.org.

California Residents (CCPA)

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA). We do not sell personal information. You may request disclosure of the categories and specific pieces of personal information we have collected, and you may request deletion of your information.

European Residents (GDPR)

If you are located in the European Economic Area (EEA), you have rights under the General Data Protection Regulation (GDPR). Our legal basis for processing any personal information is legitimate interest (providing and improving our service) and consent (when you contact us). You may withdraw consent at any time.

Children's Privacy

Our Website is intended for general audiences and is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe that your child has provided us with personal information, please contact us at info@calculatemysleep.org, and we will take steps to delete such information.

Our sleep calculators may be used by people of all ages, including children with parental supervision. Since calculations happen locally in the browser and no data is transmitted to our servers, children can safely use our tools without privacy concerns.

International Data Transfers

Our Website is operated from the United States. If you are accessing our Website from outside the United States, please be aware that your information may be transferred to, stored, and processed in the United States or other countries where our service providers are located.

By using our Website, you consent to the transfer of your information to countries that may have different data protection laws than your country of residence. We take steps to ensure that your information receives adequate protection in accordance with this Privacy Policy.

Links to Other Websites

Our Website may contain links to third-party websites, resources, or services that are not owned or controlled by us. This Privacy Policy applies only to our Website. We are not responsible for the privacy practices of other websites.

We encourage you to review the privacy policies of any third-party websites you visit. The inclusion of any link does not imply our endorsement of the linked website or its content.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or other factors. When we make changes, we will:

• Update the "Last Updated" date at the top of this page
• Post the revised Privacy Policy on this page
• For material changes, we may provide additional notice (such as a notice on our homepage)

We encourage you to review this Privacy Policy periodically to stay informed about how we are protecting your information. Your continued use of the Website after any changes indicates your acceptance of the updated Privacy Policy.

Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our privacy practices, please contact us:

We will respond to your inquiry within a reasonable timeframe, typically within 5-7 business days.