• Family

    Keeping it simple and natural.

    KNOWHEN® to plan your family

    With Lab Quality Patented Lens and FDA-approval, KNOWHEN® is a product that is revolutionizing the world of women’s health by giving women the power to understand and control their fertility cycles.

  • Dear

    A Word from Helen, CEO & Founder

    My promise to you is that KNOWHEN® will change your life and unlock the secret of your unique fertility cycle. Just five minutes each morning will give you the this knowledge and power. Please accept my sincere wish and support for your feminine health and unprecedented peace of mind with respect to your questions and concerns about fertility and pregnancy.

  • Every woman
    should know

    When is the best time to have sex

    Let us help you find out

    Whether your goal is to start a family, or to prevent pregnancy, we can help. The KNOWHEN® Saliva Fertility Monitor is the only patented, US Clinically tested, and FDA cleared product to let you know when to conceive.

  • Is today
    the Day?

    Do you know if you can conceive?

    When is the best time to try?

    Most women don't know the unique variations in their monthly reproductive cycles, but now you can. KNOWHEN® helps you know more about your fertility with accuracy, convenience, and efficiency.

  • Introducing
    your friend, Eva

    Eva lets you KNOWHEN®

    The KNOWHEN® Saliva Fertility Kit and APP have been uniquely designed to allow women to easily and accurately find out when they are ovulating.

    Watch EVA

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The Natural Solution to Family Planning

Would you like to know whether you can conceive and when would be the best time to do that? Thanks to the development of a simple, easy-to-use device, now you can. Let KNOWHEN® help you predict your fertility cycles accurately, efficiently, and naturally.

Who Benefits from Using KNOWHEN®?

You benefit from using the KNOWHEN® if you:

  • are suffering from infertility and would like to become pregnant
  • are newly trying to conceive
  • are looking for natural family planning
  • are seeking a convenient and inexpensive way to learn and track your ovulation cycle
  • would like to know when and how often you are ovulating
  • would like a better alternative to the "timing method" or cannot use other birth control methods due to religious or health concerns

Learn More

Meet Our Doctor

  • Dr. Hugh Melnick, MD, is a leader in the field of infertility treatment helping thousands of couples conceive in a supportive environment combining the best of medical science with empathy and compassion.

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Personal Testimonials

  • Joann
  • Laura
  • Kenny
  • Terry

Meet Joann

I used the KNOWHEN® kit for about two months. I did a trial and we correlated the results with a sonogram and bloodwork. It worked for me and it was easy and afforable. I do many things throughout the day so just swabbing for a few seconds is convenient for me versus going to a GYN or going on birth control pills.

See More Joann

Meet Laura

The KNOWHEN® kit is a wonderful product in order to control what I want to do with my life. I am eventually looking to have a baby although right now I am not looking to become pregnant. Using the product now helps me find out how my body works and understand whether I will have problems when eventually I want to be pregnant.

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Meet Kenny

When I saw the ferns, I was shocked that I actually saw what the manual told me I would see... It was there and I was so shocked and happy to know that I was ovulating right after ending my contraception. This product actually works and it was just the best.

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Meet Kenny

When I saw the ferns, I was shocked that I actually saw what the manual told me I would see... It was there and I was so shocked and happy to know that I was ovulating right after ending my contraception. This product actually works and it was just the best.

See More

Meet Terry

I like to use the KNOWHEN® kit because it is time-efficient and money efficient. It has a lifetime guarantee so you don't have to worry about constantly buying the product over and over again.. You also don't have to worry about the product taking up much of your life because you wake up, in five minutes, you can put the saliva on the product and wait to see if you are ovulating or not.

See More

Blog Articles

Fate after an Ovulation monitor

The choices we make in our live are often less a product of our singular desires...

Foods for Better Sex

What to eat to amp up your sex drive.

Male Fertlity Gene

Scientists have found a gene that can also have ties to male fertility.

Unlock your Secret Fertility Code

Ovulation could occur as often as twice a month, and as little as every 10 months.

Fertility Issues in Uganda

At 6.1 births per woman, Uganda currently has the 6th highest birth rate in the world.

Personality Affecting Fertility

Mindset and outlook are crucial to conceiving.


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In The Media

Helen Denise, Chief Executive Officer of HiLin Life Products based in Newark, New Jersey took home the coveted Sharkette Tank Winner Award at the second annual Own It Ventures Conference& Pitch Expo, held at the CUNY Graduate Center in New York City on March 20, 2013. Hilin Life Products was announced the winner after five companies entered the afternoon Sharkette Tank in front of a panel of investors from New York and New Jersey. In addition, the audience selected Ms. Denise for the Women's Choice Award for the best overall investor pitch.
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