Privacy Policy
Last updated: 2025/6/24
Our Commitment to Privacy
At Sleep Calculator, we are committed to protecting your privacy and ensuring the security of your personal information. This Privacy Policy explains how we collect, use, and safeguard your information when you use our service.
Information We Collect
Information You Provide
- • Wake-up times and sleep preferences you enter into our calculator
- • Any feedback or communications you send to us
Automatically Collected Information
- • Browser type and version
- • Device information (type, operating system)
- • IP address (anonymized)
- • Usage patterns and interaction data
- • Referral source (how you found our site)
Good News: We do not store your sleep calculation data on our servers. All calculations are performed locally in your browser and are not transmitted to us.
How We Use Your Information
- • To provide and improve our sleep calculation service
- • To analyze usage patterns and optimize user experience
- • To respond to your inquiries and provide customer support
- • To detect and prevent technical issues or abuse
- • To comply with legal obligations
Cookies and Local Storage
We use cookies and local storage to enhance your experience:
- • Essential cookies: Required for the website to function properly
- • Preference cookies: Remember your settings and preferences
- • Analytics cookies: Help us understand how you use our service
You can control cookie settings through your browser preferences. Note that disabling certain cookies may affect functionality.
Data Sharing and Disclosure
We do not sell, trade, or otherwise transfer your personal information to third parties, except in the following circumstances:
- • With your explicit consent
- • To comply with legal obligations or court orders
- • To protect our rights, property, or safety, or that of our users
- • In connection with a business transfer or merger
Data Security
We implement appropriate technical and organizational measures to protect your personal information:
- • SSL encryption for data transmission
- • Regular security assessments and updates
- • Limited access to personal information
- • Secure hosting infrastructure
Your Rights
Depending on your location, you may have the following rights regarding your personal information:
- • Right to access your personal information
- • Right to correct inaccurate information
- • Right to delete your personal information
- • Right to restrict processing
- • Right to data portability
- • Right to object to processing
Children's Privacy
Our service is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date. We encourage you to review this Privacy Policy periodically.
Contact Us
If you have any questions about this Privacy Policy or our privacy practices, please contact us:
Email: [email protected]
Response time: Within 48 hours