- All it takes is just a drop of saliva
Effective date: October 27, 2026
These Terms and Conditions (“Terms”) govern your access to and use of https://knowhen.com, any page that links to these Terms, and the products, content, communications, and services made available through that website (collectively, the “Site”).
The Site is operated by Hilin Life Products, Inc., doing business as KNOWHEN® (“KNOWHEN,” “we,” “us,” or “our”). By visiting the Site, creating an account if that option is available, placing an order, or otherwise using the Site, you agree to these Terms and to our Privacy Policy. If you do not agree, do not use the Site or place an order.
You must be at least the age of majority in your jurisdiction to place an order through the Site. If you use the Site on behalf of a business or other organization, you represent that you have authority to bind that organization to these Terms.
You may use the Site only for lawful, personal, and non-commercial purposes unless we give you written permission otherwise. You may not:
KNOWHEN® products are intended to support fertility awareness and ovulation tracking as described in the applicable product instructions and labeling. Information available on the Site, including articles, videos, reviews, testimonials, product descriptions, and customer-support communications, is provided for general informational purposes.
The Site and our products do not provide medical diagnosis, treatment, or individualized medical advice. They are not a replacement for advice from a qualified healthcare professional. Contact a qualified healthcare professional with questions about fertility, conception, pregnancy, contraception, irregular cycles, menopause, medication, medical conditions, or any other health concern.
Do not rely on Site content or a product result as your sole basis for making medical, contraceptive, pregnancy, or treatment decisions. Product results and user experiences can vary because of correct use, individual physiology, timing, health status, and other factors. Read and follow all product instructions, warnings, limitations, and applicable labeling before use.
All product descriptions, prices, promotions, shipping charges, availability, and other Site content are subject to change without notice. We make reasonable efforts to display information accurately, but errors, omissions, or inaccuracies may occur. We may correct any error, update information, change a price, or cancel an order before shipment when permitted by law.
When you submit an order, you offer to purchase the product or products in that order. An order is accepted only when we send a shipment confirmation or otherwise confirm acceptance. We may decline, limit, or cancel an order where permitted by law, including when a product is unavailable, payment cannot be authorized, a price or listing error has occurred, an order appears fraudulent, or an order appears to be for resale or unauthorized distribution.
You agree to provide accurate, complete, and current order, payment, billing, shipping, and contact information. Payment processing is handled through the payment provider available at checkout. You authorize us and our payment providers to charge the selected payment method for the total amount of your order, including applicable taxes and shipping charges.
Shipping options, delivery estimates, and charges are shown during checkout or on the Site. Delivery dates are estimates, not guarantees. Delays may result from carriers, weather, customs, inventory availability, payment review, or other circumstances outside our reasonable control.
You are responsible for providing a complete and accurate shipping address. Risk of loss passes to you upon delivery to the carrier, except where applicable law provides otherwise. If an order is returned because the address is incomplete, incorrect, or refused, we may charge the actual additional shipping or handling cost where permitted by law.
If an item arrives damaged, defective, or different from what you ordered, contact [email protected] or 1-877-4KNOWHEN (1-877-456-6943) promptly so we can review the issue. Our products may be subject to an express warranty that accompanies the product or is posted on the Site. Any such express warranty applies according to its written terms. Nothing in these Terms limits rights that cannot be excluded or limited under applicable law.
Promotional codes, free-gift offers, discounts, and other offers are subject to their stated terms. Unless we state otherwise, offers may not be combined, substituted, transferred, redeemed for cash, or applied to past purchases. We may modify or end an offer at any time where permitted by law. An offer is void where prohibited.
If the Site allows you to create an account, you are responsible for maintaining the confidentiality of your credentials and for activity that occurs through your account. Notify us promptly at [email protected] if you believe your account has been accessed without authorization.
If you submit a review, question, photo, video, testimonial, suggestion, or other material to us or through the Site (collectively, “Submissions”), you represent that you have the rights needed to submit it and that it does not violate law or another person’s rights. You retain ownership of your Submissions. You grant KNOWHEN a non-exclusive, worldwide, royalty-free, transferable, sublicensable license to use, reproduce, modify, publish, translate, distribute, display, and otherwise use your Submissions in connection with the Site, our products, and our business, subject to applicable law.
Do not include private medical records, personally identifying information about another person, or sensitive information in a public review or Submission. We may remove or decline a Submission that we reasonably believe is unlawful, misleading, infringing, abusive, unsafe, or inconsistent with these Terms. We are not required to publish or retain any Submission.
The Site and its content, including product names, logos, trademarks, photographs, graphics, text, videos, product materials, designs, software, and other materials, are owned by or licensed to Hilin Life Products, Inc. and are protected by intellectual-property laws.
Subject to these Terms, we grant you a limited, personal, non-exclusive, non-transferable, revocable license to access and use the Site for its intended purpose. This license does not grant you any ownership interest in the Site or its content. You may not use KNOWHEN® names, logos, or other brand features without our prior written permission.
The Site may link to third-party websites, retailers, app stores, payment providers, social-media platforms, or other services. These third parties operate under their own terms and privacy policies. We do not control and are not responsible for their content, availability, products, services, security, or privacy practices.
TO THE FULLEST EXTENT PERMITTED BY LAW, THE SITE IS PROVIDED “AS IS” AND “AS AVAILABLE.” EXCEPT FOR ANY EXPRESS WRITTEN WARRANTY PROVIDED WITH A PRODUCT, KNOWHEN DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT.
We do not guarantee that the Site will always be uninterrupted, timely, secure, error-free, or available, or that Site content will always be accurate, complete, or current. Some jurisdictions do not allow the exclusion of certain warranties. In those jurisdictions, the exclusions in this section apply only to the extent permitted by law.
TO THE FULLEST EXTENT PERMITTED BY LAW, HILIN LIFE PRODUCTS, INC., KNOWHEN®, AND OUR OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, AFFILIATES, SUPPLIERS, AND SERVICE PROVIDERS WILL NOT BE LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, LOST DATA, OR BUSINESS INTERRUPTION, ARISING OUT OF OR RELATED TO THE SITE, PRODUCTS, OR THESE TERMS.
TO THE FULLEST EXTENT PERMITTED BY LAW, OUR TOTAL LIABILITY FOR A CLAIM ARISING OUT OF OR RELATED TO THE SITE, PRODUCTS, OR THESE TERMS WILL NOT EXCEED THE AMOUNT YOU PAID TO US FOR THE PRODUCT OR SERVICE GIVING RISE TO THE CLAIM DURING THE TWELVE MONTHS BEFORE THE EVENT GIVING RISE TO LIABILITY.
Nothing in these Terms excludes or limits liability that cannot lawfully be excluded or limited.
To the extent permitted by law, you agree to defend, indemnify, and hold harmless Hilin Life Products, Inc., KNOWHEN®, and our officers, directors, employees, agents, affiliates, suppliers, and service providers from claims, liabilities, damages, losses, and expenses, including reasonable attorneys’ fees, arising from your unlawful use of the Site, your violation of these Terms, or your violation of another person’s rights.
We may suspend or terminate your access to the Site when reasonably necessary to protect the Site, our customers, or other persons; to address fraud or security concerns; or when we reasonably believe that you have violated these Terms or applicable law. Termination does not affect rights or obligations that arose before termination.
These Terms are governed by the laws of the State of New Jersey, without regard to conflict-of-law principles. Any dispute arising from or relating to these Terms, the Site, or a product purchased through the Site will be brought in the state or federal courts located in Essex County, New Jersey, unless applicable law requires a different forum. You consent to the personal jurisdiction and venue of those courts.
Nothing in this section prevents either party from seeking appropriate relief in small-claims court or from pursuing a claim in another forum when applicable law gives that party the right to do so.
We may change, suspend, or discontinue all or part of the Site. We may update these Terms from time to time by posting a revised version and updating the effective date. The revised Terms apply when posted unless a different date is stated. Your continued use of the Site after the revised Terms take effect means that you accept them, to the extent permitted by law.
These Terms, together with the Privacy Policy and any terms presented during checkout, form the entire agreement between you and KNOWHEN regarding the Site and purchases made through the Site. If any provision is found invalid or unenforceable, the remaining provisions remain in effect. Our failure to enforce a provision is not a waiver. You may not assign your rights or obligations under these Terms without our written consent. We may assign our rights and obligations in connection with a merger, acquisition, sale of assets, financing, reorganization, or other business transaction.
Questions about these Terms, products, orders, warranty requests, or customer support may be sent to:
Hilin Life Products, Inc. d/b/a KNOWHEN®
One Gateway Center, Suite 2600
Newark, New Jersey 07102
United States
Email: [email protected]
Telephone: 1-877-4KNOWHEN (1-877-456-6943)
The KNOWHEN® Ovulation Test tracks your ovulation using only a drop of your saliva. It identifies your five (5) most fertile days and the best days in your ovulation cycle if you’re trying to conceive.
