For perimenopause, menopause and HRT

Walk in with proof.

Celsia keeps the record your appointments need: your nights from Apple Health, your symptoms in one tap, every form of therapy, and one page your provider can read in thirty seconds.

Join the beta ↗ See page one

No accountApple Health data never leaves this iPhoneNothing is sent to us

Celsia's Report tab: Walk in with proof. Your first report covers the last twelve weeks, a preview of page one for July 5 to September 26, 2026, and a Share with your provider button

Notes, the old way

Tue 3:04hot flash again, soaked
Tueforgot patch?? or was that Mon
Thu 2:10brain fog in the meeting
Satbad night. woke 4x
Nov 12appt. what do I even bring

Everything your appointment needs, in order.

Most of it already exists: on your wrist, in Apple Health, in a note typed at 3 a.m. Celsia gathers it into one record with dates, doses and nights, so you can show it instead of trying to remember it.

It reads what your watch already records, so there is less to type. Everything you add is kept on your iPhone.

3:12 AM Friday night

One tap and it’s kept.

Log a hot flash, night sweats or any of more than 20 symptoms with one tap, and hold a symptom to set how strong it was and when. At night Celsia opens dark, with Night sweats and Awake at the top.

Log from the Lock Screen, Control Center, Siri or your Apple Watch without opening the app. The symptoms you log also go to Apple Health wherever it has a matching type.

If you still have periods, log bleeding and spotting and see the days since your last bleed, with no predictions.

Celsia at 3:12 a.m. on a Friday night, in its dark view: One tap and it's kept, with Night sweats and Awake at the top and a grid of symptoms below

One tap from your wrist.

Log from the Apple Watch app when your phone is across the room. What you log there comes back to your iPhone.

Celsia on Apple Watch: Hot flash, 2 today, and Night sweats, 1 today, as two large buttons, with Progesterone due at 9:00 PM below — Hot flashes and night sweats, one tap each, with today’s count.

Celsia on Apple Watch after a tap: Hot flash, 3 today, with a check mark, an Undo button, and Hot flash at 5:04 PM on this Watch — Logged, with an Undo if your sleeve did the tapping.

Celsia on Apple Watch: Progesterone due at 9:00 PM with a Taken button, and all therapy in the last 7 days, 8 of 8 doses logged — Your next dose, with Taken, and the week’s doses at a glance.

Celsia's Today screen for Saturday, September 26, cycle day 24: You slept 6 hours 10 minutes and woke twice, a short night about 50 minutes under your typical 7 hours, with sleep, heart rate variability, wrist temperature and resting heart rate against your usual range

7:10 AM Saturday

Your night, already written down.

With your permission, Celsia reads sleep, heart rate variability, resting and overnight heart rate, and wrist temperature from Apple Health, and compares each night with your own usual range, never with anyone else’s.

Each morning, Today sums up last night in a sentence and marks anything outside your usual. Nothing to type that your watch already knows.

On iOS 27, Celsia reads the stage you set in Apple Health, and symptoms you log there count too.

9:00 PM Progesterone

Every form of therapy.

Estrogen patches, gels, sprays and tablets, progesterone, vaginal estrogen, rings, IUDs, testosterone, non-hormonal treatments, and your own entries.

Reminders understand twice-weekly patches and cyclical progesterone, suggest the next patch site, and arrive as time-sensitive notifications with Taken, Snooze and Skip. Your next dose can also wait on the Lock Screen. Every dose change is marked on your timeline.

Not on any treatment yet? Celsia keeps your symptoms and nights all the same, and the report starts the conversation.

Celsia's Timeline for late July 2026: on Tuesday the 28th the estradiol patch went from 0.05 to 0.075 mg a day, with each night's sleep, hot flashes, wake-ups, a patch change and progesterone doses logged by time

Before and after

What changed when the dose did.

Change a dose and Celsia sets the four weeks before it beside the four weeks after: hot flashes, night sweats, sleep and wake-ups. The numbers come from your own record.

Each comparison has a “Why am I seeing this?” note. Celsia describes what changed. It doesn’t say why, and it never suggests a dose.

Your latest dose change is always there. Every earlier one is part of Celsia Pro (in-app purchase).

Estradiol patch0.05 → 0.075 mg/day · Jul 28

Hot flashes17 → 5 per week

Night sweats1 → 1 per week

Sleep6h 19m → 6h 48m per night

Wake-ups3.3 → 1.9 per night

Jun 30 – Jul 27 → Jul 28 – Aug 24 · example dataFour weeks beforeAfter

Trends

Four weeks, against your usual.

Trends show the last four weeks of your nights and symptoms against your usual range, and what changed after your latest dose change.

With Celsia Pro (in-app purchase): twelve weeks to a year, every earlier dose change, and pattern cards that show when symptoms line up with your nights, your cycle or your therapy, each with its numbers and a “Why am I seeing this?” note.

Symptoms · example data

Hot flashes: up to 7 a week over the last four weeks, from 4 in the four before.

Hot flashes7 a week

Headaches1.8 a week

Fatigue1.5 a week

Brain fog1.3 a week

Woke in the night1 a week

Anxiety0.8 a week

Bleeding5 days

Aug 30Today, Sep 26

twice or more, or severeonceheavier bleedinglight or spotting

Sample page one · example data

Dana · born 1979

Jul 5 – Sep 26, 2026 · 12 weeks

Current therapy

Estradiol patch, Mon & Thu, since Jul 28	0.075 mg/day
Patch changes on time	23 of 24
Progesterone, nightly	200 mg
Nights taken	81 of 84

Hot flashes per week

Before Jul 28 → after

17 → 5 a week

Nights against your usual

Sleep	6h 48m
Wake-ups	1.9 a night
Wrist temperature	−0.2 °F
Resting heart rate	57 bpm

Bleeding

Last bleed began	Sep 3
Days of bleeding	5

Questions

Is the patch dose working for my sleep?
The night sweats haven’t changed. What else can we look at?

The report

One page your provider can read in thirty seconds.

One tap makes a PDF on your iPhone:

your current therapy and how often you took it
symptoms per week
your nights against your usual
what changed after your latest dose change
bleeding
the questions you want to ask

Share it, print it or save it. Add the date of your next appointment and Celsia can remind you the evening before.

With Celsia Pro (in-app purchase), it adds pages with every symptom, dose and note.

Privacy

Apple Health data never leaves this iPhone. Nothing is sent to us.

No account

No sign-in and no email address. Apex Made runs no server for Celsia, so nothing you do in the app reaches us.

No tracking

No analytics, no ads and no third-party SDKs. Celsia’s App Store privacy label is Data Not Collected.

Yours to take

Export what you’ve entered, or delete everything, at any time. A report leaves your iPhone only when you share it.

What Celsia won’t do

Diagnose. Celsia keeps a record and describes patterns in it.
Recommend treatments or doses. Decisions about your care belong to you and your provider.
Compare you with anyone else. Your nights are measured against your own usual range.
Ask you to make an account, or sell your data.

Read the full privacy policy

Celsia Pro · in-app purchase

The long view, when you want it.

$39.99 a year

with a 14-day free trial for new subscribers

or $6.99 a month

Celsia Pro goes on sale when Celsia reaches the App Store. It works with Family Sharing.

Without Pro

Logging
The therapy log
Reminders
Widgets
The Apple Watch app
The one-page report
What changed after your latest dose change
Exporting everything you’ve entered

Celsia Pro adds

The full report with a day-by-day grid
Unlimited report history
Trends past four weeks
Every earlier dose change
Pattern cards
Your choice of device for sleep and heart rate variability

Payment is charged to your Apple Account when you confirm the purchase, or when the free trial ends. The subscription renews automatically unless it is canceled at least 24 hours before the end of the current period. Manage or cancel it in Settings › Apple Account › Subscriptions. Subscription terms · Terms of Use

Questions

What people ask first.

Do I need an Apple Watch?

No. Celsia works with what you log yourself. Sleep, heart rate and wrist temperature appear when an Apple Watch or another wearable writes them to Apple Health.

I’m not on HRT. Is it for me?

Yes. Log symptoms, bleeding and nights with no therapy at all, and bring the report to the appointment where you want to talk about it. Non-hormonal treatments have a place too.

Does it tell me what dose to take?

No. Celsia keeps a record and describes patterns in it. It does not diagnose, and it does not recommend treatments or doses.

Who can see my data?

You, and anyone you share a report with. There’s no account, Apple Health data never leaves this iPhone, and nothing is sent to us.

I don’t have periods anymore.

Celsia doesn’t need a cycle to work. If you still have periods, you can log bleeding and spotting, with no predictions.

Can I use it now?

Celsia is in public beta through Apple’s TestFlight app, on iPhone and Apple Watch. It’s coming to the App Store.

Your next appointment, with proof.

Start the record tonight. By the appointment, page one is already written.

Join the beta on TestFlight ↗