Cycle Ally

What Cycle Ally is ​

A log. You write down what happens — bleeding, symptoms, medications, visits, lab results — and the app counts what you wrote and shows it back to you. It never tells you what your body is doing.

That distinction runs through every screen, so it is worth two minutes.

What it does ​

  • Keeps periods of any length. A 24-day cycle and a 94-day cycle are both just days here.
  • Shows your own numbers: “Your cycles: 31–52 days · last 6”. Nothing is compared with anyone else unless you ask: Cycle lengths has a Show the guideline range switch, off until you turn it on.
  • Keeps medications with their dose changes, and shows what you logged in the weeks before and after the one you started most recently — or any of them with Plus.
  • Holds lab results with the laboratory's own printed range.
  • Makes a summary for a clinician out of all of it — three months on a few pages, as a PDF.

What it never does ​

  • No verdicts. It will not call a cycle late, irregular, abnormal or normal. It shows the number of days and stops there.
  • No countdowns and no nagging. Nothing counts down to a period, and nothing tells you off for a day you did not open the app. If you switch it on yourself, Today can show a range — “Next period: 12 Oct – 18 Oct · based on 6 cycles” — and it is off until you do.
  • No fertile window, and nothing about conception. It is not contraception and must not be used as any.
  • No diets, no calories, no weight goals.
  • No account, no advertising, no third-party code. Your entries stay on your iPhone.

Why “not logged” is different from “nothing” ​

Every day has three states, and the app keeps them apart everywhere: not logged (you said nothing), nothing (you tapped Nothing today, or rated a symptom None), and logged (there is a value). A blank day is never drawn or counted as a day when nothing happened — it is a day you did not say.

This matters most in counts. When the app says “Acne · 21 of 69 logged days”, the 69 is the number of days you actually answered, not the number of days in the window.

PCOS and PMOS ​

PMOS is the newer name proposed for the same condition. The app uses both, treats them as the same thing, and takes your word for which you have — or that nobody has told you yet. Nothing in the app changes because of that answer except the wording of a few sentences.

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