Reusable, Simple, Convenient

Test with 98.9% proven clinical accuracy in the USA, is the most natural way to determine your FIVE MOST fertile days.

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KNOWHEN® LITE

Free KNOWHEN® LITE App tracks daily results effortlessly

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Get The Most Accurate Information

At the core of the KNOWHEN® product line is a strong foundation of scientific evidence.

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FOX NEWS
"U.S. clinically-tested KNOWHEN® Ovulation Test tracks your ovulation using only a drop of your saliva."
THE DOCTORS SHOW
"98.9% accurate (100% proven correlation with a doctor’s ovarian ultrasound examination). It is also 100% Safe, Natural and OB/GYN recommended. It has been rated the best ovulation predictor kit for years."
THE WALL STREET JOURNAL
By Laura JOHANNES
At-Home Kits to Predict Ovulation With Less Mess Are Coming to U.S.
WIRED
"Signs of Life. The KNOWHEN® Is a Pocket Size Personal Microscope That Detects Ovulation."

KNOWHEN® BLOG

Latest news and stories at KNOWHEN® blog
Why You Should Be Using Saliva Fertility Monitors, TTC Story: Miracle Came After The Biggest Frustration and much, much more...