Privacy Policy

Last updated: August 6, 2026

Bedtime Calculator does not require an account and does not ask for personally identifying information to use the sleep calculator. The core bedtime calculator runs in your browser so you can plan sleep times and wake-up times without sending those inputs to an application server.

Calculator inputs

Wake times, bedtimes, and fall-asleep buffer settings are processed in your browser to generate results. They are not stored on our servers in this release, and there is no saved sleep history, profile, or account database attached to the calculator.

Local device data

The app stores only your calculator mode, clock format, and fall-asleep buffer in local browser storage. It never stores entered or calculated times. Shared results use a URL fragment, which is not sent as part of normal server or analytics page requests. Calendar files are generated locally after an explicit click. The calculator does not need sensitive health data, and you should not enter private medical information into any free-form field because the tool is not a medical record system.

Cookies

The core bedtime calculator does not require cookies. If future analytics or advertising tools introduce cookies or similar technologies, this policy will describe what changed and whether additional consent controls are needed.

External links

Pages such as the sleep tips blog may link to other resources over time. External sites have their own privacy practices, and this policy applies only to Bedtime Calculator.

Updates

If the privacy posture changes materially in a future release, the public policy page will be updated alongside the product. You can also review the terms of use or return to the bedtime calculator.

Contact

Questions about this policy can be sent to support@bedtimecalculator.rest.