Iris: Period & Cycle Tracker

iOS Universel / Forme et santé

Iris is the only period tracker that's 100% free, 100% private — every feature, no exceptions, no subscription ever.

Most period apps charge $10–15/month and have been caught sharing your reproductive health data with advertisers. Iris keeps everything on your device. No server. No tracking. Just honest, private tracking built around you.

PERIOD & CYCLE TRACKING
Log your period start and let Iris predict your next one. Your fertile window, ovulation day, and PMS phase are all mapped out weeks in advance — colour-coded and clear. Know exactly when your period is coming, days before it arrives. The longer you track, the more accurate your predictions become.

OVULATION & FERTILITY TRACKING
Know exactly when your fertile window opens and get smart reminders before your peak fertility days. Iris tracks your ovulation day, the five fertile days leading up to it, and your luteal phase — whether you're trying to conceive, avoiding pregnancy naturally, or simply want to understand your body better.

MENSTRUAL CALENDAR
See your entire cycle at a glance in the monthly calendar view — period days, fertile window, ovulation day, PMS phase, and predicted upcoming periods, all colour-coded and easy to read. Tap any day to view details, edit logs, or mark period days directly from the calendar.

HORMONE EDUCATION
Visualise estrogen, progesterone, FSH, and LH across your full cycle. Understand exactly why your energy, skin, libido, mood, and body change from week to week — backed by science, explained simply. Population averages mapped to your specific cycle length so the chart reflects your actual rhythm.

SYMPTOM & MOOD TRACKING
Log discharge (7 types), mood (6 types), and 12 symptoms including cramps, bloating, headache, fatigue, nausea, acne, breast tenderness, and more. Track sexual activity, basal body temperature, sleep hours, and weight. Add notes for any day. Your complete daily health picture, all in one place, building into meaningful patterns over time.

SMART REMINDERS
Get period reminders before your cycle starts, fertility alerts when your window opens, ovulation day notifications, and daily log reminders — all customised to your personal cycle length and history. Never be caught off guard again.

INSIGHTS & PATTERNS
Watch your data build into meaningful patterns. Cycle length averages, period duration trends, PMS symptom patterns, mood by phase, logging streaks, and discharge patterns — everything you need to truly understand your body and spot what's normal for you.

PRIVATE BY DESIGN
Your data stays on your iPhone. No data ever reaches our servers — because we don't have any. Optional iCloud sync goes directly to your own personal iCloud account. We never see it, we never touch it. Zero ads. Zero data-collection SDKs. Zero telemetry. Your reproductive health data is yours alone.

100% FREE — NO EXCEPTIONS
No premium tier. No in-app purchases for features. No subscription. No paywalls. Iris is the only period tracker where every single feature — period prediction, ovulation tracking, fertility window, hormone education, symptom logging, insights, and reminders — is completely free for everyone, forever.

Download Iris. Your cycle is yours.