Daysy

fertility trackers

Get to Know Your Cycle

Explore digital fertility tracking with reliable, easy-to-use Daysy and Lady-Comp fertility trackers. Learn about your fertile window and get personalized, daily insights about your unique cycle.

Revolutionizing Cycle Tracking

Our intuitive trackers are designed to be effective, personalized, and convenient.

Intelligent Algorithm

Our algorithm tells you when you’re fertile and when you’re not, even if your cycle is irregular.

Easy to Use

Temp. Track. Done. Input daily temperature readings, log your menstrual period, and our devices take care of the rest.

Tried & Tested

Refined over decades using data from millions of menstrual cycles.

Track Your Cycle and Plan Conception—Seamlessly

The Fertility Tracking Method (FTM) helps people understand their unique menstrual cycles and time conception, and our digital Lady-Comp and Daysy trackers make the process even simpler. Precise basal body temperature readings paired with our intelligent algorithm produce accurate daily insights, projections, and more. Developed and manufactured in Germany with engineering and fertility experts, Lady-Comp and Daysy provide reliable fertility tracking you can trust.