Cycle clarity, even when your cycles aren't predictable
When your cycle is irregular,
most apps and tools guess.
When your cycle is
irregular, most apps
and tools guess.
Daysy doesn't
It reads your real temperature each morning to help
you understand where you are in your cycle, one
day at a time.
It reads your real temperature each
morning to help you understand where
you are in your cycle, one day at a time.
-
99.4 % accuracy
-
Clinically validated
-
Hormone free
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Used by over 250K women worldwide
-
2 year warranty
-
30-day risk-free return
- For women with PCOS
For women with PCOS,
cycle tracking can feel like
guesswork
For women with PCOS,
cycle tracking can
feel like guesswork
-
Apps forecast based on averages that don't apply to you
-
OPKs can give late or inconsistent results
-
"Tracking everything" becomes a mental load
-
And you're left feeling like your body is the problem
It isn't.
Your cycle may be irregular.
Your insight into it shouldn't have to be.
Designed for real cycles
Daysy adapts to
your rhythm - not the other
way around
Daysy adapts to
your rhythm - not the
other way around
A simple 60-second temperature reading each morning gives
Daysy the one signal that reliably reflects what your hormones are
doing: your waking temperature.
Over time, that signal becomes a pattern.
So you can understand your real rhythm.
01
A simple daily routine
One reading before getting
out of bed.
02
An adaptive algorithm
Daysy recognizes your pattern even if your cycle
length shifts from one month to the next.
Daysy recognizes your pattern
even if your cycle length shifts
from one month to the next.
03
A clear daily signal
Green, red, or yellow - all you need to understand
where you are in your cycle
Green, red, or yellow - all you
need to understandwhere you are in your cycle
- Trusted by 250,000+women worldwide
For women who are
tired of guessing
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“I have been using the Daysy device for 2 months and am very satisfied. It is easy to use and has predicted my period and ovulation times with ease.”
Verified buyer
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“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
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“Since I am irregular... The peace of mind that it gives you... whether you are looking for pregnancy or not.”
Verified buyer
How it works
3 steps to a
clearer cycle
3 steps
to a clearer cycle
01
Take a 60-second temperature reading each morning
Your waking temperature shifts across the cycle in
small but meaningful ways.
Your waking temperature shifts
across the cycle in small but
meaningful ways.
02
Daysy analyses your pattern
It considers your reading, your past data, and any
disturbances like travel, illness, or disrupted sleep.
It considers your reading, your
past data, and any disturbances
like travel, illness, or disrupted sleep.
03
Check your daily status
A single coloured light shows where you are in your
cycle. You can sync the app for charts, trends, or
notes if you want deeper insight.
A single coloured light shows where
you are in your cycle. You can sync
the app for charts, trends, or notes
if you want deeper insight.
- For irregular cycles
Yes - Daysy can support
you if your cycles are
irregular
Yes - Daysy can
support you if your
cycles are irregular
Here's what that looks like in real life:
- You may see more yellow learning days at first
- Daysy isn't thrown off by varying cycle lengths
- Because it uses temperature, it can still recognise key patterns over time
- It doesn't predict from past cycles - it responds to today
- If your cycles fall between ~21 - 40 days, Daysy can usually build a steady pattern over time
PCOS can involve hormonal patterns that make OPKs unreliable or apps confused.
Daysy does something simpler: it listens to the physiological temperature changes your body makes around ovulation, no matter how long your cycle is or how much it fluctuates.
Daysy won't diagnose PCOS, but it can help you see patterns worth paying attention to.
What women notice
What women notice when they start using Daysy
I finally understand whats happening
Irregular cycles stop feeling like a mystery. You start seeing a rhythm.
I can plan with more confidence
Seeing where today sits in your cycle brings steadiness
I don't feel 'too irregular' anymore
You get a tool that works with your body, just as it is
“Its such a relief to have one simple thing to do”
One morning reading, and you're done.
Why temperature works better
Temperature
tells a clearer story than
predictions ever can
Temperature tells a
clearer story than
predictions ever can
Most tools try to work out your fertile window by
guessing what your body might do.
Daysy works by observing what your
body is actually doing right now.
OPKs
- LH can fluctuate with PCOS
- Can give multiple surges
- Easy to misread or mistime
App & Calendars
- Predict from generic past cycles
- Expect regularity
- Struggle with PCOS patterns
Daysy
- Uses your waking temperature
- Responds to your unique rhythm
- Supports women with irregular cycles
-
99.4 % accuracy
-
Clinically validated
-
Hormone free
-
Used by over 250K women worldwide
-
2 year warranty
-
30-day risk-free return
Bring clarity to an unpredictable cycle
medical device 30-day
risk-free return Free delivery
across Singapore
"It is easy to use and has predicted my period and ovulation times with ease."
Verified buyer
-
CE
certified -
HSA Class A
medical device -
FDA
classified -
2-year
warranty -
Free delivery
(3 days) -
30-day risk-
free return
From Stemba
A note from Stemba
Irregular cycles can create uncertainty, frustration, and a lot of unanswered questions.
You deserve clarity that fits into your real life - not more noise, pressure, or guesswork.
We chose Daysy because it gives women a simple, evidence-based way to understand their bodies with more confidence and less overwhelm.
- FAQ
Still unsure?
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