Coming to iPhone

Make sense of your PCOS/PMOS symptoms.

A few taps a day. See what changes, and take one clear page to your doctor.

Free to log, always
Built around your PCOS/PMOS symptoms
No account. Private, on your devices and your iCloud

Join the waitlist

Want to help shape it? Become an early tester

Today: symptoms marked by size, mood from low to bright, and the period card.

The problem

Sound familiar?

Hard to remember

Symptoms change over weeks. In a short appointment, it's hard to say what happened when.

Apps built for something else

Many PCOS apps are built around diets, weight or getting pregnant. Mirabelle is built around your symptoms.

Guessing

Period forecasts that assume a regular cycle. A new medicine, and no clear way to see what's changed.

1 in 3

waited more than two years for a PCOS diagnosis, and nearly half saw three or more health professionals. International survey of 1,385 women · Gibson-Helm et al., 2017

How it works

Three steps.

1
Choose what to notice
Symptoms, mood, periods, medicines. Tap what matters to you; change it any time.
2
Mark each day in a few taps
A little to a lot, low to bright, a tick for a dose. Missing a day is fine; nothing resets.
3
Take one page to your appointment
Medicines across the months, with what changed underneath: counts and cycle lengths a doctor reads quickly.

What's different

What's different about Mirabelle.

See what changed since a treatment started

Tap a medicine to see your notes before and since you started it: check-ins, symptoms and cycle lengths, in plain counts. Months later, the answer is on one page instead of in your memory.

Counts, not scores. It shows what changed; you and your doctor decide what it means.

Would you use this? Tell me as an early tester

A medicine's page in Mirabelle: spironolactone, started 26 May, with skin and hair-growth check-ins split before and since the start, and a sentence of counts under each.

A hair check on the scale doctors use

Once a month, rate coarse hair in nine areas from 0 to 4. See each area change over months, not just "worse" or "better".

Self-rated, never a diagnosis. The nine areas and 0–4 ratings of the modified Ferriman–Gallwey score, which the international guideline recommends for assessing unwanted hair.

Would you use this? Tell me as an early tester

September hair check

Upper lipwas 3
Chinwas 3
Chest
Upper armswas 1
Upper tummywas 2
Lower tummy
Thighswas 2
Upper back
Lower back

Self-rated total 9June 14Removes hair: yes

	Mirabelle	Most PCOS/PMOS apps^*
Built around your PCOS/PMOS symptoms, with no weight tracking, diets or meal plans	Yes	No
Shows your notes before and since a treatment started	Yes	No
Asks about skin and hair monthly, not every day	Yes	No
Follows the international guideline^†, with sources	Yes	No
No account needed	Yes	No
Your notes stay on your devices and your own iCloud	Yes	No
Rates hair in nine areas, on the scale doctors use	Yes	No

† International Evidence-based Guideline for the Assessment and Management of PMOS (formerly PCOS), Monash University, 2023, re-issued June 2026.

* A cross means the app's listing doesn't say so. Based on the listings of 79 PCOS/PMOS apps on the US, Australian and UK App Stores, checked 27 September 2026 and re-checked monthly.

Your notes stay yours

Some PCOS apps collect your health data linked to your name and email. Mirabelle has no account, no analytics and no server holding your notes. They stay on your devices and in your own iCloud. Privacy policy

Where the facts come from

The international guideline

The 2023 edition, re-issued for PMOS in June 2026. Every fact tied to a source.

Plain numbers

Counts, dates and cycle lengths a doctor reads quickly.

Records, never diagnoses

What you notice, not medical advice.

PCOSPMOS

Renamed in May 2026: polyendocrine metabolic ovarian syndrome. Same condition, a name about hormones and metabolism, not cysts. The Lancet · AskPMOS

Pricing

Free to use. Plus if you want more.

Free

US$0, for as long as you use it

Symptoms, mood, periods and doses
Reminders with Taken and Skip
The last 30 days of trends
The summary on screen
Export and iCloud sync

Plus

US$9.99 a month, or US$59.99 a year

US$39.99 for the first year, paid once up front.

Everything in Free
Patterns: what tends to go with each symptom
The summary as a PDF
Longer views

Billed through Apple; cancel any time. No free trial that turns into a charge.

Questions

Questions you might have.

Why is there no weight in it?

Every size. PCOS/PMOS happens at every body size.
Not just weight. Insulin resistance is common even at lower weights.
Your choice. The guideline says you can ask not to be weighed.

So Mirabelle never asks for your weight. If it matters to you, add it as your own symptom. Sources: International Evidence-based Guideline (Rec 3.6.1, PP 3.6.4) · Cassar et al., 2016

Is it really free?

Yes. Logging, reminders, the last 30 days of trends, the summary on screen, export and iCloud sync are free for as long as you use it. Plus is optional.

Do I need a diagnosis to use it?

No. It works the same whether you've been diagnosed or are still finding out, and what you note can help that conversation. Mirabelle doesn't diagnose anything.

Why doesn't it predict my period?

When cycles vary, a forecast can't be relied on, and a missed one can be worrying for no reason. You get the real dates and cycle lengths instead, the same numbers the guideline uses.

Can Mirabelle tell me if my medicine is working?

No app can decide that. Mirabelle shows your notes before and since you started, side by side, in counts. Some treatments take six months or more to judge, and the guideline says so. You and your doctor decide what the change means.

Where are my notes kept?

On your device, and in your own iCloud if you use it. There's no account, and we never see your notes. More in the privacy policy.

Is there an Android version?

Not yet. Tick the Android box when you join the waitlist; it tells us when it's worth building.

When can I try it?

The waitlist hears first: once when there's a test version, and once when it's in the App Store.