Peace of Mind, Every Morning 
With 99.4% Proven Accuracy

Peace of Mind,
Every Morning. 

99.4% Proven Accuracy

 Introducing Daysy - Your Natural, Hormone-Free Fertility Tracker

Get Daysy

Discover More

Trusted by over 250,000 customers WORLDWIDE 

Meet Daysy - Your Natural, Hormone-Free Fertility Tracker

Trusted by 250,000+ customers

Get Daysy

Discover More

Designed for Your Body. Built for Real Life.

Designed for You,
Built for Real Life
Title

Daysy is an all-in-one elegant device that takes just 60 seconds each morning.

Daysy is an all-in-one elegant device that takes just 60 seconds each morning.

Wake Up Worry-Free

Daysy’s red/green indicators reveal your fertility status in seconds.
No guesswork, no stress.

Tailored to You

Whether your cycle is regular or irregular, 
Daysy learns and adapts to you.

No Hormones. No Side Effects.

 Enjoy full-cycle awareness naturally, without drugs or complicated routines.
Just peace of mind.

Wake Up Worry-Free

Daysy’s red/green indicators reveal your fertility status in seconds.
No guesswork, no stress.

Tailored to You

Whether your cycle is regular or irregular, 
Daysy learns and adapts to you.

No Hormones. No Side Effects.

 Enjoy full-cycle awareness naturally - without drugs, or complicated routines.
Just peace of mind.

Certified.  Verified.  Globally Respected.

Swiss design excellence, with medical-grade German precision

HSA-classified in Singapore | FDA-registered | CE-marked

Manufactured to EU medical device standards

Free tracked shipping across Singapore

Certified.  Verified. 

Globally Respected.

Swiss design excellence, with medical-grade German precision

HSA-approved in Singapore | FDA-listed | CE-marked

Manufactured to EU medical device standards

Free shipping across Singapore

Real Women,
Real Cycles,
Real Results

Real Women, Real Cycles, Real Results

Trusted by over 250,000 customers worldwide

Guerloudy – USA

 

"I've only had this device for two months and already it is MIND BLOWING on how accurate it is. I do manual FAM charting to cross reference and to be safe but each time it matches DAYSY's predictions."

For Tracking Her Cycle

Jenn - USA 

 

"I've been using Daysy for two years now and absolutely love it!! It's so easy to use, I love the lights that flash according to your fertility status."

 

For Daily Confidence

Joni - USA

 

"This product paired with the Fertility Awareness Method has brought me peace of mind and self-empowerment when it comes to tracking my fertility, getting pregnant, and better understanding my body."

For Trying To Conceive

Guerloudy – USA

"I've only had this device for two months and already it is MIND BLOWING on how accurate it is. I do manual FAM charting to cross reference and to be safe but each time it matches DAYSY's predictions."

For Tracking Her Cycle

Jenn - USA 

"I've been using Daysy for two years now and absolutely love it!! It's so easy to use, I love the lights that flash according to your fertility status."

 

For Daily Confidence

Joni - USA

"This product paired with the Fertility Awareness Method has brought me peace of mind and self-empowerment when it comes to tracking my fertility, getting pregnant, and better understanding my body."

For Trying to Conceive

Women Don’t Give Up on Tracking
Tracking Gives Up on Them

Women Don’t Give Up on Tracking

Tracking Gives Up on Them

Most tracking tools weren’t built for real bodies - or real life.  Here's why.

Most tracking tools weren’t built for real bodies - or real life.

Here's why.  

Accuracy That Feels Like a Guessing Game

Most tracking apps just count days and assume your cycle follows a perfect pattern

But only 13% of women actually have a 28-day cycle.

 

That means the rest of us are left with confusion, mixed messages, and missed timing
Title

Privacy? What Privacy?

Your cycle data isn’t a product - it’s yours - but most apps dont treat it that way.

67% of tracking apps have shared user data with third parties


You deserve a device that keeps it private, safe, and offline

Accuracy That Feels Like a Guessing Game

Most tracking apps just count days and assume your cycle follows a perfect pattern


But only 13% of women actually have a 28-day cycle
 

That means the rest of us are left with confusion, mixed messages, and missed timing
Title

Privacy? What Privacy?

Your cycle data isn’t a product - it’s yours - but most apps dont treat it that way.

67% of tracking apps have shared user data with third parties


You deserve a device that keeps it private, safe, and offline

It’s Complicated, Costly, and Tedious

Hormone strips, subscriptions, syncing apps, endless charts...


You’re already managing enough


You shouldn’t need a subscription and a science degree just to understand your body
Title

No Room for Real Life

Early meetings. Late nights. A toddler who didn’t get the memo...


Real life isn’t always cycle-friendly. It’s messy, magical, and yours.


And yet most fertility tools expect you to run like clockwork

It’s Complicated, Costly, and Tedious

Hormone strips, subscriptions, syncing apps, endless charts...


You’re already managing enough


You shouldn’t need a subscription and a science degree just to understand your body
Title

No Room for Real Life

Early meetings. Late nights. A toddler who didn’t get the memo


Real life isn’t always cycle-friendly - it’s messy, magical, and yours.


And yet most fertility tools expect you to run like clockwork

It’s Complicated, Costly, and Tedious

Hormone strips, subscriptions, syncing apps, endless charts...


You’re already managing enough


You shouldn’t need a subscription and a science degree just to understand your body
Title

No Room for Real Life

Early meetings. Late nights. A toddler who didn’t get the memo


Real life isn’t always cycle-friendly - it’s messy, magical, and yours.


And yet most fertility tools expect you to run like clockwork

It’s Complicated, Costly, and Tedious

Hormone strips, subscriptions, syncing apps, endless charts...


You’re already managing enough


You shouldn’t need a subscription and a science degree just to understand your body
Title

No Room for Real Life

Early meetings. Late nights. A toddler who didn’t get the memo


Real life isn’t always cycle-friendly - it’s messy, magical, and yours.


And yet most fertility tools expect you to run like clockwork

One-Size Fits… No One

Irregular cycles, perimenopause, PCOS - your body doesn’t follow a script.


Most trackers are built for predictability - not for people.


So when things shift, you’re left with blanks - or worse - misinformation.
Title

Where’s the Science? Where’s the Support?

Some tools are reliable, but rigid. Others are simple, but not precise.


You shouldn’t have to choose between clinical credibility and real-world simplicity


What you need is both - scientific depth and everyday ease

Clinically Proven.   Effortlessly Simple.  
Trusted by Women Worldwide.

When it comes to your fertility, guesswork isn’t good enough. Daysy delivers 99.4% accuracy, backed by peer-reviewed research with 5,000+ women and 107,000 cycles.

 

It’s also incredibly simple. One button. One minute a day. That’s it.

 

And your data? It stays fully on your device - never shared, never sold, and protected by a privacy-first design.

 

No hormones. No invasive tools. Just precise science in your hands.

Class A Medical Device:  Classified by HSA in Singapore, CE in Europe, FDA in USA

Private by Design:   No cloud. No subscriptions. No hidden fees.

Start Your Daysy Journey Today

Trusted Worldwide.
Effortlessly Simple.  
Clinically Proven. 

When it comes to your fertility, guesswork isn’t good enough. 

Daysy delivers 99.4% accuracy, backed by peer-reviewed research with 5,000+ women and 107,000 cycles.

 

It’s also incredibly simple. One button. One minute a day. That’s it.

 

And your data? It stays fully on your device - never shared, never sold, and protected by a privacy-first design.

 

No hormones. No invasive tools. Just precise science in your hands.

Class A Medical Device:  Approved by HSA in Singapore, CE in Europe, FDA in USA

Private by Design:   No cloud. No subscriptions. No hidden fees.

Start Your Daysy Journey Today

More Than a Product. A Promise.


We built Stemba as a dedicated space for women and girls in Asia to take charge of their health, wellness, and self-care. That’s why we’re curating trusted, premium tools that support informed, confident choices at every stage of your journey.

The Daysy Fertility Tracker reflects that promise — offering precision, assurance, and hormone-free confidence

Curated by Women Who Understand, for Women Who Choose
 

More Than a Product. 
A Promise.


We built Stemba as a dedicated space for women and girls in Asia to take charge of their health, wellness, and self-care.

That’s why we’re curating trusted, premium tools that support informed, confident choices at every stage of your journey.
 
The Daysy Fertility Tracker reflects that promise — offering precision, assurance, and hormone-free confidence.

Curated by Women Who Understand, 
for Women Who Choose
 

Daysy Has Arrived in Asia
Enjoy 10% Off as Our Welcome Gift 

To celebrate our arrival in Asia, we're offering 10% off Daysy — our gift to support your journey.

Join thousands of women around the world taking control of their fertility naturally, confidently, and on their own terms.

Enter your email below to receive your exclusive 10% discount

Limited-time launch offer. Don't miss out
Thanks for contacting us. We'll get back to you as soon as possible.
Please use WELCOME10 at the checkout for your 10% discount

No spam. Just support and your welcome gift

Daysy is now in Asia!
Celebrate with 10% Off

Join thousands of women tracking their fertility naturally and on their terms


Enter your email below to receive your 10% discount

Limited-time launch offer. Don't miss out
Thanks for contacting us. We'll get back to you as soon as possible.
Please use WELCOME10 at the checkout for your 10% discount

No spam. Just support, and your welcome gift
Title

Your Daysy Questions, Answered
Title

How can I trust Daysy's accuracy?

Daysy is clinically tested and proven to be 99.4% accurate in identifying your fertile window thanks to a highly sensitive sensor and a proprietary algorithm built on over 5 million cycles and 30+ years of research. It's not just smart tech — it’s medical-grade intelligence you can trust every morning.   [Learn more →]

Will Daysy work with my cycle - even if its irregular?

Yes. Daysy doesn’t rely on assumptions or average cycle lengths. Instead, it learns and adapts to your unique rhythm whether you're tracking regular cycles, managing PCOS, or navigating hormonal fluctuations. Many women with unpredictable cycles choose Daysy because it’s conservative when it needs to be, and clear when it counts.
[Explore how it works →]

Does Daysy require subscriptions or ongoing costs?

No subscriptions. No monthly app fees. No test strips. Daysy is a one-time investment in a medical-grade device, with full app access and future support included. You’ll never be locked into recurring costs — just consistent clarity, day after day.

Are there any extra charges at checkout?

No. The price you see includes all applicable taxes, and shipping is free across Singapore and Hong Kong. We believe in full transparency - what you see is exactly what you’ll pay.

Can’t find your question?  Visit our Customer Support page 

or drop us a line at help@wearestemba.com - we’re here to help.

Can’t find your question?  Visit our Customer Support page or drop us a line at help@wearestemba.com - we’re here to help.

Your Daysy Questions
Title

How can I trust Daysy's accuracy?

Daysy is clinically tested and proven to be 99.4% accurate in identifying your fertile window thanks to a highly sensitive sensor and a proprietary algorithm built on over 5 million cycles and 30+ years of research. It's not just smart tech — it’s medical-grade intelligence you can trust every morning.   [Learn more →]

Will Daysy work with my cycle - even if its irregular?

Yes. Daysy doesn’t rely on assumptions or average cycle lengths. Instead, it learns and adapts to your unique rhythm whether you're tracking regular cycles, managing PCOS, or navigating hormonal fluctuations. Many women with unpredictable cycles choose Daysy because it’s conservative when it needs to be, and clear when it counts.
[Explore how it works →]

Does Daysy require subscriptions or ongoing costs?

No subscriptions. No monthly app fees. No test strips. Daysy is a one-time investment in a medical-grade device, with full app access and future support included. You’ll never be locked into recurring costs — just consistent clarity, day after day.

Are there any extra charges at checkout?

No. The price you see includes all applicable taxes, and shipping is free across Singapore and Hong Kong. We believe in full transparency - what you see is exactly what you’ll pay.

Can’t find your question?  We’re here to help
Visit our Customer Support page or drop us a line at help@wearestemba.com 
Title

Trust your body. 
Choose the tracker designed to trust it with you.

You’ve made it this far because you’re thoughtful, informed, and ready for clarity

 

Daysy offers exactly that: a premium, science-backed, hormone-free fertility tracker built to support your journey - every day

 

One device. One cost. Lifetime of insight, support, and peace of mind

99.4% Clinically Proven Accuracy

Hormone-Free, Non-Invasive, and Effortlesly Simple

One Time Cost. No subscriptions. No Hidden Fees 

Your Data Stays Yours – Backed by EU & PDPA Privacy Laws

HSA Approved & FDA Listed, Built to EU Medical Device Standards

2-Year Warranty & Lifetime Customer Support

Trusted by 250,000 Women Worldwide

Trusted by 250,000 Women Worldwide

Trusted by 250,000 Women Worldwide

Start Your Daysy Journey

Includes 2 Year Warranty & Free Shipping to SG & HK

Start Your Daysy Journey

Free shipping to SG & HK,   2-Year warranty included

Start Your Daysy Journey

Includes 2 Year Warranty & Free Shipping to SG & HK

Start Your Daysy Journey

Free shipping to SG & HK,   2-Year warranty included

Start Your Daysy Journey

Includes 2 Year Warranty & Free Shipping to SG & HK

Start Your Daysy Journey

Free shipping to SG & HK,   2-Year warranty included

Trusted by Thousands, Built for You

Designed for women who want more than just another app, Daysy combines medical-grade accuracy with everyday ease.


No hormones. No recurring costs. 


Just data you can trust, and a lifetime of insight, support, and calm.

99.4% Clinically Proven Accuracy

Hormone-Free, Non-Invasive, and Effortlesly Simple

One Time Cost. No subscriptions. No Hidden Fees 

Your Data Stays Yours – Backed by EU & PDPA Privacy Laws

HSA Classified & FDA Listed, Built to EU Medical Device Standards

2-Year Warranty & Lifetime Customer Support

Trusted by 250,000 Women Worldwide

Start Your Daysy Journey

Includes 2 Year Warranty & Free Shipping to SG & HK

Start Your Daysy Journey

Free shipping to SG & HK  |  2-Year warranty

Daysy provides scientifically backed fertility insights, but is not intended for contraceptive use. 


Consult a healthcare professional for personalised advice regarding your reproductive health.

When you understand your body, everything changes.
Daysy makes it beautifully simple.

Designed for women who want more than just another app, Daysy combines medical-grade accuracy with everyday ease.


No hormones. No recurring costs. 


Just data you can trust, and a lifetime of insight, support, and calm.

99.4% Clinically Proven Accuracy

Hormone-Free, Non-Invasive, and Effortlesly Simple

One Time Cost. No subscriptions. No Hidden Fees 

Your Data Stays Yours – Backed by EU & PDPA Privacy Laws

HSA & FSA Classified, Built to EU Medical Device Standards

2-Year Warranty & Lifetime Customer Support

Trusted by Over 250,000 Women Worldwide

Trusted by 250,000 Women Worldwide

Trusted by 250,000 Women Worldwide

Start Your Daysy Journey

Includes 2 Year Warranty & Free Shipping to SG & HK

Start Your Daysy Journey

Free shipping to SG & HK,   2-Year warranty included

Start Your Daysy Journey

Includes 2 Year Warranty & Free Shipping to SG & HK

Start Your Daysy Journey

Free shipping to SG & HK,   2-Year warranty included

Start Your Daysy Journey

Includes 2 Year Warranty & Free Shipping to SG & HK

Start Your Daysy Journey

Free shipping to SG & HK,   2-Year warranty included

Daysy is classified by Health Sciences Authority (HSA), Singapore as Class A Medical Device.
Daysy provides scientifically backed fertility insights, but is not intended for contraceptive use. 

Consult a healthcare professional for personalised advice regarding your reproductive health.

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