Now in early access

You track everything.
Not this.

Sleep. HRV. Macros. Steps. You've built a serious health stack — but there's a blind spot most men don't discover until it's too late to act proactively.

Fero is the first male fertility intelligence platform — tracking sperm health, hormones, and lifestyle continuously, across your full 74-day biological cycle.

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What you get when you join

Priority access to the app at launch (Q4 2026)

Founder updates on our science and progress

Priority pricing — locked in before public launch

The Problem

Half the equation.
None of the attention.

Women have Flo, Natural Cycles, and an entire ecosystem built around reproductive health. Men have a single semen analysis — ordered only when something has already gone wrong. The injustice is stark.

Women have

Flo. Natural Cycles. Clue.

Continuous cycle tracking, hormone intelligence, predictive insights, symptom logging — a full ecosystem built around proactive reproductive health.

Men have

One test. No context.

A single semen analysis, ordered reactively after 12 months of trying. No trends, no lifestyle context, no early warning system. No platform.

Now there's

Fero.

The male equivalent — tracking sperm health, hormones, and lifestyle longitudinally. The fertility intelligence men have never had.

50%

of fertility challenges involve a male factor

12mo

before a man is clinically tested under current guidelines

proactive male fertility platforms built for the everyday man

Stigma has created a blind spot. Men aren't screened, educated, or given tools until a year has already been lost trying to conceive.

The data is clear — we've just been ignoring it. Sperm health is linked to miscarriage risk and pregnancy outcomes; under-researched because the question wasn't being asked.

Sperm health is a leading indicator of overall health. Motility, morphology, and count reflect metabolic health, hormonal balance, and stress — a window into the body men have never had access to.

Waiting isn't a strategy. The 74-day spermatogenesis cycle means what you do today shapes fertility three months from now. Benchmark early, not after a diagnosis.

"Men don't lack the capability to own their health. They've lacked the tools — and the permission — to start."

Fero Health — know your number. Own your health.

How It Works

Built around your biology

Most health tools measure you in snapshots. Fero is designed around the 74-day spermatogenic cycle — the only timeframe over which meaningful change in fertility can actually be measured.

🔬

Why 74 days? Spermatogenesis — the process of producing mature sperm — takes 42–74 days from start to finish. A single test tells you where you are today. Fero tracks the full cycle, so you can see real change over time and understand what's actually driving it.

Test

At-home semen analysis and hormone panel kits deliver clinical-grade data without a clinic visit. Sperm count, motility, morphology, testosterone, LH, FSH, and more.

Track

Daily lifestyle check-ins — sleep, alcohol, stress, diet, exercise — build your continuous fertility picture. Connects with Oura and Whoop if you already use them.

Optimise

Your AI coach ranks the highest-impact lifestyle changes by your specific data and the clinical evidence behind each one. Personalised, not generic.

Repeat

Re-test at the end of each 74-day cycle. Measure real change. Watch your Fero Score move as your habits take effect — with the data to prove why.

The App

Your fertility intelligence, in one place

Test results, daily habits, and hormone data — connected into a single, continuous picture of your reproductive health.

Your Fero Score

A single composite score tracks your fertility across each 74-day cycle. See exactly what's moving your number — and by how much.

Full Biomarker View

All 16 markers across semen analysis, hormones, and lifestyle in one clean grid. Nothing hidden, nothing oversimplified.

AI Fertility Coach

Evidence-based recommendations ranked by impact on your specific data. Always cited. Always personalised.

You track everything.
Not this.

Half the equation.
None of the attention.

Built around your biology

Your fertility intelligence, in one place

Track every dimension of your health

Be among the first.

You track everything. Not this.

Half the equation.None of the attention.

Built around your biology

Your fertility intelligence, in one place

Track every dimension of your health

Be among the first.

You track everything.
Not this.

Half the equation.
None of the attention.