Damson

Damson for iPhone

The meal companion for PCOS.

Keep a record of your meals, your cycle and your days for free, and Damson never decides what kind of PCOS you have. Built for PCOS, now also called PMOS.

Damson's Today screen on day 1 since the last period. A companion note reads: yesterday you said full, how is this morning treating you, with a suggestion to log the usual wholegrain bread. Below it, the symptoms marked today and the cycle day, and a summary of the week: 7 plates across 7 days and 5 check-ins.

Real screens from the app, some with demo data.

Damson is on the App Store.

Free to download, and the record is free to keep. No ads, and nothing to cancel later that you did not choose.

Download on the App Store

Damson is not medical advice. It helps you notice your own patterns, and your clinician is still the person to talk to about treatment.

From a photo to your own pattern

  1. Damson's review screen for a plate of grilled meat with rice and vegetables. It says every weight below is an estimate and nothing is saved until you say so, and the cooked white rice has been corrected to 150 g, with a way back to the estimate of 100 g.

    You photograph your plate. Damson names what it sees, with weights that always say about, and you can correct any of them.

  2. Damson's read under the photograph of the plate. The carbohydrate is marked not whole, with protein and fibre alongside, and a paragraph says most of it comes from the cooked white rice and that eating the meat and vegetables first and the rice last can help.

    Then comes the read: what this plate means for you, on this day, in plain sentences.

  3. Damson's Today screen recalling a similar meal: on July 29, 2026, her check-in after it gave scores out of five, and the wholegrain bread was bigger then.

    When a plate comes back, Damson remembers what you said after it, and weeks of answers become patterns you can open.

Every way a meal gets in

However the meal reaches you, it lands in the same record, and you confirm every food before it is saved.

Everything Damson does

A read, not a number.

After you log a meal, Damson tells you what the plate means for you: your cycle day, your goals, your past reactions. Estimates always say about, and you can correct them. It never grades a plate.

How the food scanner works

Damson's read of a saved meal, Rice Cooker Salmon Rice Bowls, with estimated amounts. The carbohydrate is marked not whole with protein and fibre alongside, a paragraph says most of it comes from the sushi rice and suggests eating everything else first, and a note says the plate is about 680 g with about 12 g of fibre.

It remembers how it sat.

A few hours later, Damson asks one small question. Your answers become your own record of what suits you, receipts included.

More about meal check-ins

Damson's Today screen asking how did breakfast sit, for lentil soup, salad and bread about two hours ago, with four answers: settled, full, tired and craving.

Built for cycles that run 40 to 90 days.

A period app tells you that you are late. Damson keeps the history instead: every cycle's length, the spotting days and the notes you made along the way, with no predicted date to be wrong about. It is the record you can put in front of a doctor in ten minutes.

More about the cycle log

Six cycle lengths from demo data. Each one is kept as it happened.

Mark what you felt, on the days you want to.

Bloating, cramps, fatigue, low mood, food noise and seven more, on a body map and a simple grid, each mild, moderate or severe. Change or clear a mark at any time, and leave a day blank when there is nothing to say.

More about the symptom tracker

Damson's Symptoms sheet for today: a body map beside a list of symptoms, and a grid of twelve with bloating marked moderate and fatigue and food noise marked mild.

Patterns that show their working.

Damson draws observations from your own days. Each one shows what it compared, the counts, the dates it covers and what it cannot show. They are not medical findings, and they never say that one food caused an outcome.

More about patterns

A Damson pattern card, a longer-running observation from your own days. Across 82 days, she marked fatigue on 32 of the 42 days she also marked bloating and on 5 of the 40 days she did not, with a note that this does not show one mark caused the difference.

Yours stays yours.

Your records live on your phone, and they sync through your own iCloud rather than our servers. Questions you ask are stripped of anything that identifies you.

Read the privacy policy

Damson's notice before your first question: your question goes to our server with the relevant records, you can inspect and remove records before sending, and nothing is kept there.

How Damson works with the science

Every claim the app makes carries a citation to peer-reviewed research, and you can open the paper from inside the app. Where the evidence is thin or still argued over, Damson says so instead of rounding it into confidence.

The same rule holds for everything we publish here. How we source claims, how we grade evidence, and how we handle a correction is written down in our editorial policy.

Questions people bring here

We write about what happens after a meal, and every claim carries a citation you can open. These are the ones people ask most.

Everything we have written

The record is free. Nothing is locked at the door.

Most PCOS apps ask for a subscription before you have logged a single meal. Damson does not. Your meals, how they sat, your cycle history, your notes and your appointment page are free, and stay free.

Free

  • Meals and how they sat with you
  • Cycle history built for long cycles
  • Notes, symptoms and the appointment page
  • One photo read a day, three questions a day, three meal ideas a week

The full Damson

  • Photo reads and questions without a daily limit
  • The menu read
  • The plate library
  • The reading on your longer-running patterns

Syncing through your own iCloud is free and on from the first day, so your records follow you to your other devices, and you can switch it off any time in the app. Nothing is sold for it. Prices are shown in the App Store for your country.

Get Damson

Questions about Damson

Is there an app for PCOS?

Yes. Damson is an iPhone app built for PCOS, now also called PMOS. It keeps a record of your meals, how they sat with you, your cycle and your symptoms, and it never decides what kind of PCOS you have. It is on the App Store in English and Turkish.

Is Damson free?

The record is free, for good: logging meals, your cycle, symptoms, notes and check-ins, and the appointment page, with one photo or link read a day, three questions a day and three meal ideas a week. Barcode and search are unlimited. The full Damson is a subscription with a free trial that lifts the daily limits and adds the restaurant menu read, the plate library and the longer-running pattern readings. Prices are shown in the App Store.

Does Damson count calories?

No. Damson shows foods and amounts in grams, with protein, fibre and fat on the read, and has no calorie targets, no scores and no streaks. It never calculates calories itself; the only calorie figure you may see is one a restaurant printed on its own menu.

Does it work with irregular cycles?

Yes. It is built for cycles that run 40 to 90 days. You log when a period starts and the days it runs, there are no predicted dates, and a month without a period is kept as information, not treated as an error.

Where is my data kept?

On your iPhone, synced to your own iCloud, which is on by default and can be switched off. Your data is not sold, not used for advertising and not used to train models. A meal photo is sent once to be read and is never stored by us.

What is PMOS?

PMOS, polyendocrine metabolic ovarian syndrome, is the new name for PCOS, announced in May 2026. It is the same condition, with the same diagnosis and the same treatment. Damson works the same under either name.

Made by one person, for the long run.

Damson is independent. The record is free and stays free; the full Damson is a subscription. No advertisements, no data sales, and no investor who needs you to use it more than suits you. If something is wrong, write to us.