Clear terms for free tools and digital products

Last updated: July 24, 2026

Educational use

Sleep Calculator provides general sleep-planning estimates and educational materials. It is not medical advice and must not be used to diagnose or treat a health condition.

Accounts

An account is not required for the free calculator. Google sign-in is required to associate a paid purchase with the correct user and restore access during the stated access period.

Digital purchases

Paid products are one-time purchases, not subscriptions, and do not renew automatically. Unless a different period is shown at checkout, access is provided for 30 days after a completed payment.

Refunds and delivery issues

Digital materials are delivered immediately after payment and are generally not refundable after access, except where required by law. For duplicate charges or technical delivery failures, contact support@sleepcalculator.life within 7 days for review.

Acceptable use

Do not misuse the site, interfere with its operation, attempt unauthorized access, or redistribute paid materials without permission.