# Perioo Period & PMDD Tracker — HRT, Menopause & Cycle Sync > HRT, Menopause & Cycle Sync (iPhone/iPad app by Byte Flux Studios LTD.) - Source: https://appshunter.io/ios/app/perioo-period-and-pmdd-tracker/id6759457683 (this page in markdown: same URL + `.md`) - Developer: [Byte Flux Studios LTD](https://appshunter.io/developer/1878718406) - Category: Health & Fitness, Medical - Price: Free with in-app purchases - Age rating: 12+ - Requires: iOS 18.0 · 30 MB - Languages: American English - Released: 2026-02-25 - Data updated: 2026-07-24 - User reviews in markdown: https://appshunter.io/ios/app/perioo-period-and-pmdd-tracker/id6759457683/reviews.md ## What is Perioo Period & PMDD Tracker? YOUR PERIODS. YOUR PRIVACY. YOUR CONTROL. Perioo is the private period & ovulation tracker that puts YOU first. Works 100% Offline. All your data stays on your phone—offline, private, and completely under your control. No cloud uploads. No data selling. Just accurate cycle predictions and powerful insights when you need them. WHY PERIOO IS DIFFERENT While other apps upload your most personal health data to the cloud, Perioo keeps everything local. You own your data. Period. A privacy-focused offline period tracker for your data security. CORE FEATURES INCLUDE - Accurate period predictions based on YOUR patterns - Interactive calendar with cycle visualization - Fertility window & ovulation tracking - Symptom, mood & flow logging (30+ symptoms) - Cycle phase tracking (menstrual, follicular, ovulation, luteal) - Smart notifications (period & fertility reminders) - Biometric app lock (fingerprint/face/PIN) - Encrypted backup & restore with passphrase - Dark & light themes with accent colors - Standard cycle calculations - Basic and in-depth analytics (Cycle history & lengths) PREMIUM ANALYTICS Unlock deeper insights for less than competitors: - 10+ advanced charts & trend analysis - Cycle length patterns over time - Flow intensity tracking by cycle day - Mood & symptom correlation by phase - Weight-cycle relationship analysis - Cycle phase distribution charts - Smart filtering (view last 2, 3, 6, or 12 cycles) PRIVACY YOU CAN TRUST - NO cloud storage - NO data sharing with third parties - NO 3rd party ads - NO internet required for core features - 100% offline-capable - Local database with encryption - Biometric protection - Full data export anytime POWERFUL INSIGHTS, SIMPLE INTERFACE Track your cycle with ease: - Beautiful, intuitive calendar - One-tap period logging - Badge-based symptom tracking - Cycle metrics dashboard - Pattern-based predictions using YOUR data - Ovulation & fertility windows calculated automatically Perfect for: - Conception planning (fertility tracking) - Health monitoring (track symptoms, patterns, irregularities) - Cycle awareness (understand your body's rhythm) - Life planning (predict periods for vacations, events, workouts) - Secure menstrual calendar (period tracker without account) DESIGNED FOR EVERYONE - Supports regular & irregular cycles - Adapts predictions to YOUR unique patterns - Accessible design - Completely offline (no internet required) HOW IT WORKS 1. Log your period start dates (takes 10 seconds) 2. Add symptoms, mood, or flow details (optional) 3. View predictions & insights automatically 4. Unlock premium analytics if you want deeper trends SMART PREDICTIONS - Based on standard cycle tracking methods - Standard luteal phase calculation methods - Standard fertility window estimation - Adapts to YOUR unique cycle patterns - Pattern-based predictions from YOUR data—not random guessing Download Perioo: The Secure Period Tracker today! *Note: This app is for informational purposes only and is not a medical device. Always consult a healthcare professional for medical advice.* Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stla/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Perioo Pro | $4.99 | per month | | Perioo Pro | $79.99 | per year | | Perioo Pro | $7.99 | per month | | Perioo Pro | $19.99 | per month | | Perioo Pro | $11.99 | per month | | Perioo Pro | $39.99 | per year | | Perioo Pro | $99.99 | per year | | Perioo Pro | $59.99 | per year | ## Version history (last 5 releases) ### 1.0.9 — 2026-07-20 Bug fixes and UI improvements ### 1.0.8 — 2026-05-26 UI improvements ### 1.0.7 — 2026-05-11 Bug fixes and performance improvements. ### 1.0.5 — 2026-04-16 Bug fixes and improvements ### 1.0.4 — 2026-04-06 Bug fixes and improvements ## Apps similar to Perioo Period & PMDD Tracker | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sage: Menopause Tracker](https://appshunter.io/ios/app/sage-menopause-tracker/id6761015201) | — | Free | Health & Fitness | | [Linnea — Perimenopause Care](https://appshunter.io/ios/app/linnea-perimenopause-care/id6766985561) | — | Free | Health & Fitness | | [Feelings: Period Tracker](https://appshunter.io/ios/app/feelings-period-tracker/id6762365940) | — | Free | Health & Fitness | | [Perimosa Perimenopause Tracker](https://appshunter.io/ios/app/perimosa-perimenopause-tracker/id6762017789) | — | Free | Health & Fitness | | [Hercule - Fitness Tracker](https://appshunter.io/ios/app/hercule-fitness-tracker/id6755726344) | — | Free | Health & Fitness | | [LadyFlowz](https://appshunter.io/ios/app/ladyflowz/id6596740523) | — | Free | Health & Fitness | ## More apps by Byte Flux Studios LTD - [Breathly: Daily Breathing](https://appshunter.io/ios/app/breathly-daily-breathing/id6761551639) - [Baby Bottle, Pump & Diaper Log](https://appshunter.io/ios/app/baby-bottle-pump-and-diaper-log/id6762371657) All apps by Byte Flux Studios LTD: https://appshunter.io/developer/1878718406 --- *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 2026-07-24.*