Saliva Ovulation Microscope – 98.9% Accurate Fertility Tracker

Discover a smarter, natural way to understand your fertility with the KNOWHEN Saliva Ovulation Microscope. Clinically validated in the USA with 98.9% proven accuracy, this innovative tool helps you predict your fertile window and plan your family with confidence. Unlike messy urine-based kits, the KNOWHEN Microscope uses just a drop of saliva to detect fern-like crystal patterns that signal ovulation is near. Easy to use each morning, it offers a hygienic, waste-free, and stress-free fertility tracking method. The built-in microscope makes reading results simple, while the included free mobile app allows you to record your daily patterns, monitor your cycle, and personalize your ovulation tracking journey. Trusted by women worldwide, KNOWHEN empowers you with clarity and accuracy—so you can take charge of your reproductive health, naturally and effectively.
Product Dimensions ‏ : ‎ 2.82 x 1.8 x 0.58 inches; 2.8 ounces
Item model number ‏ : ‎ KN-Microsocope-V1
Date First Available ‏ : ‎ March 16, 2026
Manufacturer ‏ : ‎ Hilin Life Products, Inc
ASIN ‏ : ‎ B0GSRMNRT1
Best Sellers Rank: #227,126 in Health & Household (See Top 100 in Health & Household) #72 in Ovulation Tests
Customer Reviews: 5.0 5.0 out of 5 stars (1) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Clinically Proven Accuracy: Track your cycle with 98.9% U.S.-validated accuracy, helping you confidently predict your 5 most fertile days for natural family planning.
Innovative Saliva Microscope: Built-in microscope uses saliva patterns to detect ovulation, offering a clean, non-invasive alternative to messy urine strips.
Simple Daily Use: Just place a drop of saliva each morning, let it dry, and view fern-like crystal patterns to know when ovulation is approaching.
Hygienic & Stress-Free: No waste, no chemicals, and no discomfort. A safe and easy solution for women who want to understand their fertility naturally.
Free Fertility Tracking App: Connect with the complimentary app to log results, monitor ovulation trends, and personalize your family planning journey.