# CycleSync

> CycleSync (iPhone/iPad app by Enrico Agostini.)

- Source: https://appshunter.io/ios/app/cyclesync/id6744355194 (this page in markdown: same URL + `.md`)
- Developer: [Enrico Agostini](https://appshunter.io/developer/1805179002)
- Category: Health & Fitness, Utilities
- Price: $1.99
- Age rating: 12+
- Requires: iOS 17.5 · 3 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, European Spanish
- Released: 2025-07-08
- Data updated: 2026-09-15
- User reviews in markdown: https://appshunter.io/ios/app/cyclesync/id6744355194/reviews.md

## What is CycleSync?

CycleSync is the menstrual cycle tracking app that puts your privacy and accuracy first. All your data stays exclusively on your device.
Key Features:

Smart cycle tracking with animated visualization
Personalized predictions based on your health profile
Configurable intelligent reminders
Detailed trend and variability analysis
Full support for metric and imperial units
Elegant interface with dark mode
Always private data - no cloud sync

Advanced Features:

Complete health profile with automatic BMI calculation
Automatic irregular cycle detection
Seasonal statistics and personalized patterns
Complete history with data export
Symptom tracking by category
Predictions with confidence intervals

CycleSync is designed for women of all ages who want to better understand their bodies. The app uses advanced algorithms that consider age, medical conditions, lifestyle, and seasonal factors to provide increasingly accurate predictions.
Privacy Guaranteed: Your data is never shared, synced, or uploaded to external servers. Everything stays on your device.


## Version history (last 5 releases)

### 1.2.1 — 2026-09-04

This version fixes several issues in the Cycle History screen that came up after the last update.

- The predicted date of your next cycle in Cycle History now matches the one shown on the other screens.
- The monthly summary no longer mixes cycles from different years.
- The yearly average no longer includes the cycle in progress, whose partial length lowered the figure.
- The cycle in progress now shows the days actually elapsed instead of its expected length.
- The "Cycle Length Reference" setting is now correctly applied when comparing cycle lengths in Cycle History.
- The symptom count now also includes symptoms logged day by day.
- Month names now follow the language set in the app.

### 1.2.0 — 2026-09-03

This version brings a wide range of fixes to calculation accuracy, data saving and report generation.

IMPORTANT FIXES
- Symptoms logged day by day are now saved correctly and remain available after closing the app.
- Fixed a crash that could occur while exporting a report to PDF or CSV.
- You can no longer log a cycle dated before the most recent one, which used to make statistics inconsistent.

PREDICTIONS AND STATISTICS
- The predicted date of your next cycle is now the same on every screen.
- The countdown to your next cycle now matches the predicted date.
- The reliability indicator reflects how much data is actually available and no longer reaches unrealistic values when only a few cycles have been logged.
- Averages, variability and charts no longer include the cycle in progress, whose partial length distorted the figures.
- Regularity analysis is now shown only once at least three completed cycles are available.
- Cycle phases are calculated correctly on short cycles too.
- Reopening a previous cycle no longer changes the length set in your preferences.

REPORTS AND EXPORT
- Fixed the cycle length shown in the PDF report.
- Cycle phases in the PDF now match those shown in the app.
- Fixed the estimated blood loss calculation.
- CSV files now open correctly in Excel, including accented and special characters.

INTERFACE, NOTIFICATIONS AND SETTINGS
- Fixed the alignment of days in the cycle entry calendar.
- The notifications switch in Settings now takes effect immediately.
- Cycle start and delay reminders are no longer cleared by mistake.
- The "Cycle Length Reference" setting is now applied to Trend Analysis.
- Removed sample data that could appear in the Advanced Prediction section.

Update related to compliance with Apple's privacy requirements.

### 1.1.0 — 2026-01-03

- New interactive onboarding for an easy start
- Visual indicator to quickly identify delayed cycles
- More accurate predictions thanks to an improved calculation engine
- Optimized performance: the app is now up to 40% faster
- Enhanced notifications with quick actions for faster interactions
- Fixed all reported crashes and improved overall stability
- New menstrual flow tracking: monitor daily intensity with smart alerts and detailed statistics
- Complete export system: save and share your data in XLSX, JSON, and PDF with automatic backup and instant restore

### 1.0.1 — 2025-09-07

- Update regarding compliance with Apple’s privacy requirements. No changes to the app’s code.

### 1.0 — 2025-07-08

No release notes.

## More apps by Enrico Agostini

- [ToDoList+](https://appshunter.io/ios/app/todolist-plus/id6743940162)

All apps by Enrico Agostini: https://appshunter.io/developer/1805179002

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*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 2026-09-15.*