- All it takes is just a drop of saliva
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.
KNOWHEN® Advanced Ovulation Test stands apart through its revolutionary approach to fertility monitoring:
Validated through comprehensive U.S. clinical studies in 2014
Uses just a drop of saliva—no chemicals, no waste
One reusable device replaces months of disposable tests
First-ever fertility app combined with an ovulation test
Educational kits and mobile app for complete fertility tracking
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.
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.
For over a decade, we’ve dedicated ourselves to:
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
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.
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!
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.
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.
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.