There’s a clearer, evidence-based way to understand your fertile window
Trying to conceive shouldn’t feel this confusing
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medical device
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Trusted by specialists
For women trying to conceive
We hear you
I’m dreading the next family gathering..
I’ve tried apps, strips, everything... and I’m still not sure what’s going on..
I’m worried I’m missing something important..
The month begins with hope, and ends with questions.
You scour the subreddits - and somehow it still feels like you might be missing something. You keep an eye on every little shift, wondering if it means anything.
It’s a lot to carry, especially when you’re trying so hard to do everything right.
You’re not alone, and you’re not doing anything wrong.
Why timing is hard?
What actually affects your fertile window?
There's a lot of noise out there, so let's lay it out
Your cycle can vary, even when it's healthy
A "regular" cycle doesn't mean predictable to the day.
Your fertile window isn't just one day
Most women have 5-7 days when conception is possible.
Apps assume it'll be like clockwork
They look backwards, not at what your body is doing right now.
OPKs don't tell the whole story
They detect LH surges, not ovulation itself.
Different TTC tools do different jobs
There's no single "right" method, only what fits your life.
No wonder
things feel confusing. Daysy can help
Before Daysy
Every month feels like stepping into the unknown again.
You’re hopeful, but also bracing yourself - trying to read every sign your body gives.
The tools you use point in different directions, and you’re left trying to make sense of the gaps between them.
After Daysy
There’s one clear point to return to.
A morning reading that doesn’t change its mind or contradict itself.
It doesn’t take away the hoping, but it gives that hope something steadier to rest on.
Daysy gives you clarity
A clearer way to move through TTC
Right now, you’ve got pieces of the puzzle, not the full picture.
What if you could understand:
- When your fertile window is likely to begin
- Which days are best to try for a baby
- How your cycle behaves month to month
Daysy offers you a simple, hormone-free way to understand your fertile and non-fertile days over time.
So you can make a plan.
How it works
How Daysy works
Daysy is a hormone-free, clinically validated device that helps you understand your fertile and non-fertile days with 99.4% accuracy.
If you’re trying for a baby, it gives you a clearer picture of how your cycle behaves.
*Accuracy refers to identification of non-fertile (green) days (van de Roemer et al., 2021).
What you do
A 60-second temperature reading before you get out of bed.
What Daysy does
Analyzes your pattern as your readings build.
What you see
A simple colour system that shows whether your day is fertile, possibly fertile, or not fertile.
If you want the app
You can watch your cycle’s rhythm unfold in more detail.
Because TTC is easier when you’re working with real information, not assumptions.
See the science behind Daysy
FDA classified
HSA Class A
medical device
CE certified
Trusted by specialists
A simple routine
How Daysy fits into your life
A small morning habit that becomes a clearer view of your cycle
01
Measure
Take a 60-second temperature reading before getting out of bed.
02
Analyze
Daysy’s algorithm classifies your fertile or non-fertile days based on your pattern.
03
See the Signal
Red, green, or yellow lights show where you are in your cycle.
04
Watch the Pattern Build
After a week or two, your rhythm becomes clearer.
Trusted by 250,000+ women worldwide
For women who are tired of guessing
“I absolutely love Daysy. She has been very easy to use and has taken away the fear and
human error risk when it comes to the fertility awareness method.”
Verified buyer
“This product paired with the Fertility Awareness Method (FAM) has brought me peace of mind and self-empowerment when it comes to tracking my fertility, getting pregnant, and better understanding my body. I highly recommend this product. It is worth every penny!”
Verified buyer
“I love using Daysy to track my cycle — I wake up every morning excited and curious to see what my basal temperature is and what it means in parallel with what my body is
experiencing.”
Verified buyer
Know your fertile days with confidence
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medical device 30-day
risk-free return Free delivery
across Singapore
medical device 30-day
risk-free return Free delivery
across Singapore
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"This product paired with the Fertility Awareness Method (FAM) has brought me peace of mind and self- empowerment when it comes to tracking my fertility"
Verified buyer
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CE
certified -
HSA Class A
medical device -
FDA
classified -
2-year
warranty -
Free delivery
(3 days) -
30-day risk-
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FAQ
What if I miss a day?
And other things women ask us
If something doesn't feel clear
(or you just want someone to walk through
it with you), we're here.
You're always welcome to ask
Yes, but it will have more conservative outputs. If your cycles are consistently longer than 40 days, or if your doctor has raised concerns, it’s best to speak with a clinician. Daysy is not a diagnostic tool.
Missing an occasional reading won’t erase your progress. Daysy works best with a gentle routine, but perfection isn’t required.
Yes. Many women pair Daysy with OPKs for peak-day targeting, or continue with TCM or gynaecology support. Daysy fits easily alongside your existing care.
No, Daysy is not registered as a contraceptive device.
Daysy can’t diagnose conditions or confirm hormone levels. If you’re worried about your cycle, please speak to a healthcare professional.
Trying to conceive can be complex and emotional. Daysy is a tool for understanding your fertile window, not a guarantee of pregnancy. If you have concerns about conception timelines, a fertility clinician can help you explore next steps.
Your data stays private and under your control. Stored on your device, syncs securely, never shared or sold. Your body is your business. You can find detailed information on how we treat your data here
If something doesn't feel clear
(or you just want someone to walk through
it with you), we're here.
You're always welcome to ask