🔒 Privacy Policy
Last Updated: September 28, 2026
📱 App Information
App Name: Sleep Cycle Calculator
Developer: calcsphere
Website: https://www.calcsphere.com/
🛡️ Privacy at a Glance
Sleep Cycle Calculator is designed with your privacy in mind.
The app does not collect, store, save, transmit, or share your personal information with the developer or any third party. Any information you enter into the calculator is used only to provide the requested calculation and remains within the app.
🔐 1. Information We Collect
Sleep Cycle Calculator does not collect personal information.
The app may allow you to enter information such as:
🕐 Bedtime
😴 Wake-up time
🛌 Sleep duration
⏰ Preferred wake-up time
Other information required for sleep-cycle calculations
This information is used only to perform the calculations requested by you.
We do not send this information to our servers, the developer, or any third party.
💾 2. Data Storage
Sleep Cycle Calculator does not maintain a database of your personal information.
Information entered into the calculator remains locally within the app or your device during use and is not transmitted to external servers.
The developer, calcsphere, does not have access to the information you enter into the app.
🚫 3. Data Sharing
We do not sell, rent, transfer, or share your personal information with third parties.
Because the app does not collect or transmit your personal information, there is no personal information available for us to share with advertisers, analytics providers, data brokers, or other third parties.
🌐 4. Internet and External Services
The basic sleep-cycle calculations can be performed without submitting your personal information to an external service.
If the app contains links to external websites, those websites operate under their own privacy policies. We recommend reviewing the privacy policies of any external website you choose to visit.
📊 5. Analytics and Advertising
The Sleep Cycle Calculator does not require you to create an account or provide personal information to use its core calculator functionality.
The developer does not use the information entered into the calculator for advertising or analytics purposes.
If a future version of the app introduces third-party services, this Privacy Policy will be updated to explain what information may be processed and how.
👤 6. User Accounts
Sleep Cycle Calculator does not require users to create an account, register, or provide information such as:
Name
Email address
Phone number
Password
Home address
👶 7. Children's Privacy
Sleep Cycle Calculator does not knowingly collect personal information from children or adults.
Since the app does not require users to submit personal information to the developer, it is designed to minimize the collection of user data.
🔒 8. Data Security
Because Sleep Cycle Calculator does not collect or transmit the information entered into its calculator, the developer does not maintain a server-side database containing your calculator information.
You should always use your device's standard security features to protect information stored locally on your device.
🗑️ 9. Data Deletion
There is no personal information stored by the developer that you need to request us to delete.
Any locally stored information, if applicable, can be removed by deleting the app or using the relevant device/app settings.
🔄 10. Changes to This Privacy Policy
We may update this Privacy Policy from time to time to reflect changes to the app, its features, or applicable requirements.
Any updated version will be published on this page with a revised Last Updated date.
📩 11. Contact Us
If you have questions about this Privacy Policy or the privacy practices of Sleep Cycle Calculator, you can contact the developer through:
Developer: calcsphere
Website: https://www.calcsphere.com/
❤️ Our Privacy Commitment
Sleep Cycle Calculator is built to provide a simple sleep-cycle calculation experience while respecting your privacy.
Your entered information stays within the app and is not sent, sold, or shared with the developer or any third party.
© 2026 calcsphere. All rights reserved.