# Iris: Period & Cycle Tracker — Ovulation & PCOS Calendar > Private period, ovulation, and cycle tracker with advanced insights and Apple Health sync. (iPhone/iPad app by Arbaz Siddiqui.) - Source: https://appshunter.io/ios/app/iris-period-and-cycle-tracker/id6761134901 (this page in markdown: same URL + `.md`) - Developer: [Arbaz Siddiqui](https://appshunter.io/developer/1887947140) - Category: Health & Fitness, Medical - Price: Free with in-app purchases - Rating: 4.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 9 MB - Languages: American English, Filipino, German (Germany), Indonesian, Japanese, Polish, Brazilian Portuguese, Russian, Latin American Spanish, Thai - Released: 2026-04-02 - Data updated: 2026-08-19 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/iris-period-and-cycle-tracker/id6761134901/reviews.md ## What is Iris? Every feature free. No subscription. No data sharing. 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 account, no telemetry. Your cycle data never leaves your phone. PERIOD & CYCLE TRACKING Log your period and Iris predicts your next one, fertile window, ovulation day, and PMS phase — all mapped out weeks in advance. Colour-coded calendar, day log, and smart reminders included. IRREGULAR CYCLE TRACKING Iris detects cycle variability from your data and switches to honest prediction ranges instead of single dates. No fertile window guessing for irregular users. Built for PCOS, perimenopause, and anyone whose body doesn't fit the textbook. PERSONAL INSIGHTS & PATTERN DETECTION Iris turns your daily logs into useful patterns. See which symptoms, moods, discharge types, activity and vitals appear most often in each cycle phase, then tap into any pattern for phase distribution, cycle-day timing, recent history and prediction notes. After enough history, Iris can help you spot recurring signals like fatigue, cramps, mood shifts or discharge changes before they appear — with insights calculated privately on your device. LH STRIP LOGGING Log your daily ovulation test result — Negative, Positive, or Peak. Iris immediately shifts your ovulation estimate to reflect your actual LH surge. Over time, Iris learns your personal luteal phase length and uses it to sharpen every future prediction — replacing the generic 14-day default with your actual biology. No other free app does this. BBT TRACKING Log your basal body temperature each morning and Iris calculates your personal coverline. When three consecutive readings rise above it, Iris marks a confirmed thermal shift — retrospective confirmation that ovulation occurred. Pair BBT with LH strips for the Symptothermal Method: the most accurate natural fertility awareness method, completely free. APPLE HEALTH SYNC Bidirectional sync with Apple Health. Iris reads your period history, BBT from connected thermometers, sleep, and weight. Period days, BBT, LH results, and cervical mucus data are written back to your Health dashboard. Iris data always wins — Apple Health only fills fields you haven't already logged. CONTRACEPTIVE & POSTPARTUM MODE On the pill, hormonal IUD, or copper IUD? Contraceptive Mode pauses ovulation predictions, labels bleeds as withdrawal bleeds, and adds a daily pill reminder. Just had a baby? Postpartum Mode pauses predictions while you recover, then resumes when you're ready. SYMPTOM & MOOD TRACKING Log mood, 14 symptoms (cramps, bloating, fatigue, acne, brain fog, hair shedding, and more), discharge type with fertility context, sleep, weight, and notes for any day. HORMONE EDUCATION Visualise estrogen, progesterone, FSH, and LH across your full cycle — mapped to your specific cycle length so the chart reflects your actual rhythm. PARTNER SHARING Invite a partner to follow your cycle — view-only, end-to-end encrypted, and completely free. PRIVATE BY DESIGN Your data stays on your iPhone. No servers. Optional iCloud sync goes to your own iCloud account — we never see it. No telemetry. No data-collection SDKs. 100% FREE — NO EXCEPTIONS No premium tier. No subscriptions. No paywalls. Every single feature — LH logging, BBT charting, irregular cycle detection, Apple Health sync, contraceptive mode, postpartum mode, and more — is completely free for everyone, forever. Download Iris. Your cycle is yours. ## Key features - Period and cycle prediction - Irregular cycle tracking - Personalized insights and pattern detection - LH strip and BBT logging - Apple Health synchronization - Contraceptive and postpartum modes - Symptom and mood tracking ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Remove Ads | $2.99 | one-time | ## Frequently asked questions about Iris ### Does Iris have ads? Yes, Iris contains advertisements. As a free application, it utilizes ads to support its development and continued availability to users. ### What is the privacy policy for Iris? Iris prioritizes user privacy by keeping all cycle data on the device. It states that no server, account, or telemetry is used, and your cycle data never leaves your phone, ensuring no sharing with advertisers. ### How accurate are Iris's predictions for irregular cycles? Iris detects cycle variability and switches to honest prediction ranges instead of single dates for irregular users. It is built for conditions like PCOS and perimenopause, aiming for accurate predictions even when the body doesn't fit standard patterns. ### Can Iris sync with other health apps? Yes, Iris offers bidirectional sync with Apple Health. It can read period history, BBT, sleep, and weight, and write back period days, BBT, LH results, and cervical mucus data to your Health dashboard. ### What are the subscription costs for Iris? Iris is completely free with no subscription required. The app explicitly states 'Every feature free. No subscription.' to differentiate itself from other paid period tracking applications. ### How does Iris handle contraceptive use? Iris includes a Contraceptive Mode that pauses ovulation predictions, labels bleeds as withdrawal bleeds, and adds a daily pill reminder for users on birth control methods like pills or IUDs. ### What is the update frequency for Iris? The latest version of Iris, 2.6.0, was last updated on 2026-06-24. This indicates a relatively active development cycle, with updates likely occurring to improve features and address any issues. ### Is Iris suitable for all age groups? Iris has an age rating of 4+, making it broadly accessible. However, its detailed health tracking features are most relevant and beneficial for individuals who menstruate. ## Version history (last 5 releases) ### 2.6.4 — 2026-08-15 Under the hood improvements and performance tuning. Thanks for using Iris. ### 2.6.3 — 2026-08-06 Medication and pill reminders. Add any pill or supplement, pick a time, and log it each day. Make the daily log yours. Reorder the sections you use, hide the ones you don't, and track more: pregnancy tests, lifestyle factors, new discharge types, moods and symptoms. Choose what Iris highlights. Just tracking, trying to conceive, or avoiding pregnancy. Colours and guidance adapt to match. Plus bug fixes and improvements. ### 2.6.2 — 2026-07-31 Bug fixes and improvements. We just launched our Instagram and Pinterest. Follow us for cycle guides, tips and science-backed insights: instagram.com/iriscycletracker pinterest.com/irisperiodcycletracker ### 2.6.1 — 2026-07-02 bug fixes and improvements ### 2.6.0 — 2026-06-24 Partner Sharing is here. Invite a partner to follow your cycle — your current phase, predictions, and daily tips on how to support you. It's view-only, end-to-end encrypted, and completely free. Only someone with your share code can see it, and you can stop sharing anytime. Thanks for using Iris! ## More apps by Arbaz Siddiqui - [Mercuro: Thermometers Puzzle](https://appshunter.io/ios/app/mercuro-thermometers-puzzle/id6762402072) All apps by Arbaz Siddiqui: https://appshunter.io/developer/1887947140 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*