hormone free. fully you.
Meri
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Meri

Something NEW is arriving

Your chance to be part of something big and new.

It's time to feel like women again.

Hormone-free cycle care. Built with the women who want it done properly.

Join the waitlist
from the founder

I took the pill for six years.

I lived with the side effects. I gained about 10 kilos. My desire dropped. My attraction to my partner changed.

When I stopped, I realized something quieter and harder: I simply hadn't felt like a woman.

So I'm building Meri. The product I wanted for myself.

A device that, seamlessly, lets me know where I am in my cycle, and whether I can get pregnant that day. Naturally. Without hormones. Without invasive methods. Without endless daily fuss.

What we're building

Wear it to sleep. Wake up knowing.

The Meri heart sits on your skin overnight with a body adhesive patch. By morning you know where you are in your cycle, and whether you can get pregnant that day. Naturally. Hormone-free.

Join the waitlist
Meri heart sensor worn on skin
Meri heart sensor
The Meri heart

Soft on the body. Built for sleep.

The signal is temperature. The form is a heart you can actually wear overnight.

Meri app
The app

One clear answer by morning.

Your cycle. Your fertility window. Clear enough for one daily question: can I get pregnant today?

not todayyou're freeyour move
The science

Accurate BBT. Precise fertility window.

Meri measures core temperature while you sleep and cleans sleep noise like night awakenings so you get accurate BBT. From that signal it calculates your fertility window with precision.

Membership

One membership. Everything in.

Everything included: the device, the body adhesive patches, and the algorithm that shows your fertility window.

$15 / month

  • The deviceReusable Meri heart sensor.
  • Body patchesHold Meri to your skin overnight.
  • The algorithmYour fertility window, day by day.
Join the waitlist
Where we are

Building with the women who join early.

01

Now

Waitlist open. Your spot, your voice, first access when batches open.

02

Next

Prototype refinement with early members. Shape what ships.

03

Then

First units go out in waves. Waitlist stays first in line.

No deposit. No year-long commitment. Join free, stay close, leave anytime. The waitlist is how you keep first access and a say in what we make.

Founding waitlist

Take your place in line.

Early members hear first when Meri opens. After you join, you see your place in line.

Free to join · no spam · no commitment

No spam. No commitment. You'll see your place in line right after you join.

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Meri in use
Questions & answers
When will Meri be available?
We're still building with early women from the waitlist first. There's no deposit and no lock-in — joining keeps you first in line when batches open, and close to the decisions that shape the product.
What is Meri?
A night sensor and an app. Wear the heart device to sleep. By morning you know where you are in your cycle, and whether you can get pregnant that day. Naturally, without hormones, without invasive methods, without endless daily fuss.
How much is membership?
$15 a month. Membership includes everything: the device, the adhesive patches that hold it to your body, and the algorithm that shows your fertility window.
How does the queue work?
Everyone who joins gets a real place in line. After signup you see your number. You can share an invite link if you want — optional, no pressure. Early spots hear first when Meri opens.
Can I really influence what you build?
Yes. That's the point of the waitlist. Leave feedback, book a short conversation, tell us what you need. We want you inside the community, not just on a list.
Is Meri a contraceptive?
No. Meri is not a contraceptive and does not prevent pregnancy. Like Daysy, Tempdrop, and other fertility monitors, it helps you see your fertile window from body signals — mainly continuous overnight temperature, a medical marker of ovulation. How you act on that is always your choice. If you are preventing pregnancy, pair Meri with a method approved for that purpose.
Why temperature?
After ovulation, progesterone rises and resting body temperature usually climbs by about 0.2–0.5°C. That biphasic shift is one of the most established cycle biomarkers in reproductive medicine. Meri watches it overnight so you don't have to take a fragile morning reading.
How do the patches work?
Medical-grade adhesive patches hold the reusable heart sensor to your body overnight so it can read continuous resting temperature. Fresh patches ship with membership. The core device is yours to keep.

Still curious? info@mericycle.com