About KNOWHEN®

Empowering Women Through Natural Fertility Awareness

Every breakthrough begins with a story. For KNOWHEN®, it started with our founder Helen Denise’s personal journey through an ectopic pregnancy in the early 2000s. This life-altering experience transformed her mission in life—from a successful career woman to a passionate advocate for women’s fertility awareness and health education.

Our Innovation in

Fertility Awareness

KNOWHEN® Advanced Ovulation Test stands apart through its revolutionary approach to fertility monitoring:

99% Clinical Accuracy

Validated through comprehensive U.S. clinical studies in 2014

All-Natural Testing Method

Uses just a drop of saliva—no chemicals, no waste

Cost-Effective Solution

One reusable device replaces months of disposable tests

Smart Technology Integration

First-ever fertility app combined with an ovulation test

Comprehensive Support

Educational kits and mobile app for complete fertility tracking

Our Founder

Meet Our Founder Helen Denise

Helen is a fertility advocate. She is on a mission to reach women trying to conceive, search for a natural family planning solution, and reach young girls for educational
purposes about personal body cycles, fertility, body awareness, and healthy
living.

Our History

The Story Behind Hilin Life Products Days

Every meaningful journey begins with a powerful story. For Hilin Life Products, that story starts with our founder, Helen Denise. In the early 2000s, Helen was thriving in her career, unaware that life was about to take an unexpected turn. A sudden ectopic pregnancy changed everything. It was a painful, heartbreaking experience—one filled with grief, confusion, and a deep sense of loss. But from that moment of darkness, a new purpose was born.

Determined to transform her pain into something meaningful, Helen made it her mission to support other women in understanding their bodies, fertility, and health. This powerful commitment gave birth to Hilin Life Products and the KNOWHEN® journey.

What began as one woman’s personal healing has evolved into a movement—more than a decade of empowering women with innovative, science-backed tools that honor the natural rhythms of the female body. Helen’s story is one of resilience, hope, and unwavering dedication. Today, we proudly carry her vision forward, helping women around the world turn their own dreams into reality.

Our Vision

Our Commitment To Women's Health

For over a decade, we’ve dedicated ourselves to:

Who Can Use KNOWHEN® Kits

Trying to conceive

Perfect for natural family planning

Looking for accurate ovulation tracking

Irregular period, premenopausal women

Natural pregnancy planning or spacing

Have problem with conception

understanding ovulation cycles

Menopause women

Second Infertility issue

Going through IVF

Looking to the Future

Under Helen’s continued leadership, we’re constantly advancing our technology while staying true to our core mission. As we develop new fertility awareness solutions, we remain committed to blending scientific precision with natural approaches to women’s health.

KNOWHEN® isn’t just a product—it’s a movement toward a better understanding of women’s bodies, backed by science and inspired by personal experience. Whether you’re planning to conceive, seeking natural family planning options, or simply wanting to understand your body better, KNOWHEN® provides the accuracy and support you need for your journey.

Join the thousands of women who have discovered the natural way to monitor their The most natural way to watch
your fertilityfertility with KNOWHEN®—FDA-cleared, clinically proven, and personally empowering.

Ovulation can be detected by various signs not readily discernible by anyone other than the woman experiencing them. Women nearing ovulation experience changes in their cervix and the mucus it produces along with their basal body temperature.

Our Happy Mothers

Excellent product! I am using it along with the Billings ovulation method and it is just a perfect combination for me since the Billings method tells me my fertile days and this one not only knows when I am fertile but also when I am ovulating!

Maria Palito

Happy mother from LA

 The KNOWHEN® saliva test has been a fantastic addition in our quest for pregnancy. It is so empowering to have a visual component to see your own hormone changes and predict fertility. It is so much cleaner to use and less wasteful than the plastic monitors and plastic urine sticks.

Willie Ryan

Happy mother from California

 This product empowers women to have reliable information regarding their fertility. Knowledge is power and this gives reliable information to all who use it. I give it to my family and friends who want to know when they are fertile to conceive and those who want a non-invasive and drug-free form of birth control.

Judy L. Davis

Happy mother from Newyork