Privacy Policy

01 Introduction

Welcome to SleepCycle Pro ("we," "us," or "our"). We operate the website located at sleepcalculatortools.com, including all related pages, tools, and content (collectively, the "Service"). This Privacy Policy describes how we collect, use, disclose, and safeguard your information when you visit our website and use our free sleep calculator tool.

We are committed to protecting your personal information and your right to privacy. If you have any questions or concerns about this policy or our practices with regards to your personal information, please contact us at support@sleepcalculatortools.com.

Please read this Privacy Policy carefully. By using our Service, you agree to the collection and use of information in accordance with this policy. If you do not agree with the terms of this Privacy Policy, please do not access or use the Service.

02 Information We Collect

We collect information in several ways — automatically through your browser, voluntarily when you provide it, and through third-party services integrated into our website. Here is a comprehensive breakdown:

2.1 Information Collected Automatically

When you visit our website, certain information is automatically collected by our servers and third-party analytics tools:

• Log Data: IP address (anonymized), browser type and version, operating system, referring URL, pages visited, time spent on pages, and the date and time of your visit.
• Device Information: Device type (mobile, tablet, desktop), screen resolution, browser language settings, and timezone information (used to display accurate local time in our calculator).
• Usage Data: How you interact with our tool — which calculator mode you use, how many times you calculate, which sections you visit — collected in anonymized, aggregated form only.
• Cookies and Similar Technologies: Small files placed on your device by our website and third-party services. See Section 5 for full details.

2.2 Information You Voluntarily Provide

Our calculator tool allows you to input certain information to generate sleep recommendations. This includes wake-up time preferences, bedtime preferences, age group selection, and sleep latency preferences. This information is processed entirely within your browser and is never transmitted to our servers. We may store your preferences locally on your device using localStorage to improve your experience on return visits.

2.3 Information from Third Parties

• Google Analytics: Anonymized website traffic and user behavior data.
• Google AdSense: Advertising-related data including ad impressions, clicks, and interest-based targeting data managed by Google.
• Social Sharing: If you use our share function, the target platform (browser's native share API) may collect data per their own privacy policy.

03 How We Use Your Information

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

• Service Operation: To provide, maintain, and improve our sleep calculator tool and website functionality.
• Analytics & Improvement: To understand how users interact with our tool so we can improve accuracy, usability, and content quality.
• Advertising: To display relevant advertisements through Google AdSense. Ad personalization is governed by Google's privacy policies.
• Security: To detect, prevent, and address technical issues, spam, abuse, and potential security threats.
• Legal Compliance: To comply with applicable laws, regulations, and legal processes.
• User Preferences: To remember your calculator settings (age group, sleep latency) between visits using browser localStorage — stored only on your device.
• Communication: If you contact us via email, to respond to your inquiries and provide support.
• Aggregated Research: To generate anonymized, aggregated statistics about sleep calculator usage patterns (e.g., most popular modes, average calculations per session) with no personally identifiable information.

We will never sell, rent, or trade your personal information to third parties for their marketing purposes. We will never use your health-related inputs (sleep times, age group) for advertising profiling.

04 Cookies & Tracking Technologies

We use cookies and similar tracking technologies to enhance your experience on our website. Here is a detailed breakdown of the types of cookies we use:

4.1 Essential Cookies — Required for the website to function properly. These cannot be disabled without affecting site functionality. They include session management and security tokens.

4.2 Analytics Cookies (Google Analytics) — Help us understand how visitors use our website. Data collected is anonymized and aggregated. We have enabled IP anonymization in Google Analytics. You can opt out using the Google Analytics Opt-out Browser Add-on.

4.3 Advertising Cookies (Google AdSense) — Used to serve relevant advertisements and measure ad performance. Google may use these to show personalized ads based on your browsing history across websites. You can manage Google ad settings at adssettings.google.com.

4.4 Preference Cookies (localStorage) — We use browser localStorage (not traditional cookies) to save your calculator preferences such as age group and sleep latency settings. This data is stored only on your device and is not transmitted anywhere.

Managing Cookies: You can control and delete cookies through your browser settings. However, disabling certain cookies may affect website functionality. Most browsers allow you to: view stored cookies, delete all or specific cookies, block cookies from specific websites, and block all third-party cookies.

05 Data Sharing & Disclosure

We do not sell your personal data. We share information only in the following limited circumstances:

• Service Providers: Google Analytics (analytics), Google AdSense (advertising). Each operates under their own privacy policies and data processing agreements.
• Legal Requirements: We may disclose your information if required by law, court order, or governmental authority, or when we believe disclosure is necessary to protect our rights, protect your safety, or investigate fraud.
• Business Transfer: In the event of a merger, acquisition, or sale of all or a portion of our assets, user information may be transferred as part of that transaction. We will notify users via a prominent notice on our website.
• Consent: We may share information with third parties when we have your explicit consent to do so.
• Aggregated Data: We may share anonymized, aggregated data that cannot reasonably be used to identify any individual with research partners or the public.

We do not share any health-related inputs you enter into the calculator (sleep times, age group, sleep latency) with any third party under any circumstances, as this data is processed and stored exclusively within your browser.

06 Data Security

We implement industry-standard security measures to protect the information we handle:

• HTTPS Encryption: All data transmitted between your browser and our server is encrypted using TLS (Transport Layer Security).
• Minimal Data Collection: We follow a privacy-by-design approach and collect only the minimum information necessary for our stated purposes.
• No Health Data Storage: Calculator inputs (sleep times, age group) are never stored on our servers — only in your browser's localStorage.
• Regular Security Assessments: We periodically review our information collection, storage, and processing practices and security measures.
• Access Controls: Access to any user data we do hold is restricted to authorized personnel only.
• Third-Party Vetting: We only use third-party services (Google Analytics, AdSense) that maintain industry-standard security practices and are GDPR-compliant.

07 Your Privacy Rights

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

• Right of Access: Request a copy of the personal information we hold about you.
• Right of Rectification: Request correction of inaccurate or incomplete personal information.
• Right of Erasure: Request deletion of your personal information ("right to be forgotten") where no legal basis for retention exists.
• Right to Restrict Processing: Request that we limit how we use your personal information in certain circumstances.
• Right to Data Portability: Request a copy of your data in a structured, machine-readable format.
• Right to Object: Object to processing of your personal information for direct marketing or based on legitimate interests.
• Right to Withdraw Consent: Where processing is based on consent, withdraw it at any time without affecting lawfulness of prior processing.

To exercise any of these rights, contact us at support@sleepcalculatortools.com. We will respond within 30 days. For browser localStorage data (your calculator preferences), you can delete it at any time through your browser's developer tools or privacy settings.

08 GDPR Compliance (EU Users)

If you are a resident of the European Economic Area (EEA), we process your personal data under the following lawful bases as defined by the General Data Protection Regulation (GDPR):

• Legitimate Interests: Operating and improving our website, preventing fraud, ensuring security.
• Consent: For advertising cookies and analytics, where required by applicable law.
• Legal Obligation: Complying with applicable laws and regulations.
• Contract Performance: Providing the services you request.

We do not transfer personal data outside the EEA without appropriate safeguards. Our use of Google Analytics and AdSense relies on Standard Contractual Clauses (SCCs) approved by the European Commission for data transfers to the United States.

You have the right to lodge a complaint with your national data protection supervisory authority if you believe we have not complied with applicable data protection laws.

09 CCPA Compliance (California Residents)

If you are a California resident, the California Consumer Privacy Act (CCPA) provides you with specific rights regarding your personal information:

• Right to Know: Request disclosure of personal information collected, used, disclosed, or sold about you in the past 12 months.
• Right to Delete: Request deletion of personal information collected from you, subject to certain exceptions.
• Right to Opt-Out of Sale: We do not sell personal information. You have the right to opt out of any future sale.
• Right to Non-Discrimination: We will not discriminate against you for exercising your CCPA rights.

To exercise your CCPA rights, contact us at support@sleepcalculatortools.com with "CCPA Request" in the subject line. We will respond within 45 days.

10 Children's Privacy (COPPA)

Our Service is not directed to children under the age of 13. We do not knowingly collect personally identifiable information from children under 13. If you are a parent or guardian and you are aware that your child has provided us with personal information, please contact us at support@sleepcalculatortools.com. If we become aware that we have collected personal information from children without verification of parental consent, we take steps to promptly remove that information from our servers.

For users aged 13–17, we recommend parental guidance when using our Service. Our sleep calculator does use age group data (which you self-report), but this information is processed solely within your browser and is not transmitted to our servers.

11 Third-Party Links

Our website may contain links to third-party websites, resources, or services that are not operated by us. If you click on a third-party link, you will be directed to that third party's website. We strongly advise you to review the Privacy Policy of every site you visit. We have no control over and assume no responsibility for the content, privacy policies, or practices of any third-party sites or services.

This Privacy Policy applies only to our website (sleepcalculatortools.com). It does not apply to information collected by any third party, including through any application or content that may link to or be accessible from our Service.

12 Data Retention

We retain different types of data for different periods based on the nature of the data and our operational needs:

• Server Log Data: Retained for 90 days for security and technical troubleshooting, then automatically deleted.
• Analytics Data: Google Analytics data is retained for 14 months per our configuration, then automatically deleted.
• Email Correspondence: If you contact us, emails are retained for 2 years for support continuity, then deleted.
• localStorage Preferences: Stored on your device indefinitely until you clear your browser data or manually delete them. We have no control over or access to this data.

When retention periods expire, data is either permanently deleted or anonymized so it can no longer be associated with any individual.

13 International Data Transfers

Our website is operated from servers that may be located in various countries. If you access our Service from outside the United States, your information may be transferred to, stored, and processed in the United States or other countries where our service providers operate. Data protection laws in these countries may differ from those in your home country.

We take appropriate safeguards to ensure that your personal information remains protected in accordance with this Privacy Policy when transferred internationally, including use of Standard Contractual Clauses where required by applicable law.

14 Do Not Track Signals

Some browsers include a "Do Not Track" (DNT) feature that signals to websites that you do not want to be tracked. Currently, there is no uniform standard for how companies should respond to DNT signals. Our website does not currently respond to DNT signals. However, you can opt out of tracking by:

• Using the Google Analytics Opt-out Browser Add-on
• Managing your Google Ad settings at adssettings.google.com
• Using your browser's private/incognito mode
• Installing a reputable ad-blocking extension
• Adjusting your browser's privacy settings

15 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. For material changes, we will provide a more prominent notice (such as a banner on our homepage for 30 days).

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