Accurate, affordable ovulation-cycle insight.
Know your fertile days in real time with personalized, private predictions that put you in charge of your cycle.
The Problem
Only 13% of women can accurately estimate when they are ovulating & likely to conceive.
19 million women in America today lack reasonable access to contraception.
61% of women have deleted a specific health app because of privacy concerns.
Your Biology, Your Results
The Fernn Difference
>97% accurate - Know your fertile window in real time, not after ovulation
Custom ovulation-window predictions - Based on your hormones, not averages
Secure & anonymous - Your data is always private, never shared
Reusable & non-invasive - Simple testing, no strips, nothing invasive
Affordable - Evergreen device + 1-year app subscription, just $89