# Iris: Period and Ovulation Tracker

> Free period and ovulation tracker for iPhone and iPad. Predictions come from your own
> cycles, irregular cycles and PCOS get a likely range instead of one date, and your data
> stays on your phone. No account and no subscription.

- Website: https://www.arbazsiddiqui.me/app/iris/
- App Store: https://apps.apple.com/app/id6761134901
- Platforms: iPhone and iPad (iOS 17 or later)
- Price: free. Every feature is free. A few ads pay for the app; a one-time purchase removes them. No subscription.
- Languages: English, German, Spanish, Filipino, Indonesian, Japanese, Polish, Portuguese, Russian, Thai
- Made by: Arbaz Siddiqui, an independent developer (https://www.arbazsiddiqui.me/about)
- Support: https://www.arbazsiddiqui.me/app/iris/support
- Privacy policy: https://www.arbazsiddiqui.me/app/iris/privacy
- Last updated: 2026-10-02

## Privacy

- No account, email or login.
- Data is stored on the iPhone. Optional sync copies it to the user's own private iCloud.
- Iris has no servers of its own.

## Features

- **Period predictions** from the user's own cycle history. Iris estimates ovulation and counts the next period forward from it, so a late ovulation moves the forecast instead of flagging the period as late.
- **Ovulation**: log LH test strips and basal body temperature. A positive LH test marks ovulation on the calendar and resets the countdown to the next period. Temperatures are charted against a coverline.
- **Irregular cycles and PCOS**: when cycles vary a lot, Iris shows a likely window based on past cycles, and says plainly when a period runs past it.
- **Widgets**: Home Screen widgets (small and medium) and Lock Screen widgets show cycle day, phase and days until the next period, and advance at midnight on their own.
- **Partner sharing**: share a code; the partner sees phase, cycle day, predictions and a daily tip in Iris, plus a heads-up the day before a period. View only, end-to-end encrypted, mood and symptoms private unless shared, can be stopped at any time.
- **Apple Health**: two-way sync of period flow, basal body temperature, ovulation tests, cervical mucus, weight and sleep.
- **Reminders**: period, fertile window, PMS week, pill and medication reminders, each switchable.
- **Daily log**: flow, symptoms, mood, discharge, sleep, weight and notes; unused items can be hidden.
- **Goal modes**: just tracking, trying to conceive, or avoiding pregnancy. Colours and wording adapt.
- **Life stages**: pregnancy and postpartum modes; hormonal contraception mode stops ovulation estimates.
- **Doctor report**: PDF export of cycles and symptoms.
- **Hormones explained**: how estrogen, progesterone, LH and FSH change across the cycle.

## Not a contraceptive

Iris predictions are estimates. The avoiding pregnancy mode highlights days with a higher chance of pregnancy but never marks a day as safe.

## Questions

**Is Iris free?** Yes. Every feature is free; a one-time purchase removes ads. No subscription.

**Do I need an account?** No.

**Where is my data stored?** On the iPhone, with optional sync to the user's own iCloud. Iris has no servers.

**Does Iris work with irregular cycles or PCOS?** Yes, with a likely window instead of a single date.

**Does Iris have widgets?** Yes, for the Home Screen and the Lock Screen.

**Can my partner see my cycle?** Only if you share a code. View only and end-to-end encrypted.

**Does Iris work with Apple Health?** Yes, in both directions.