# CycleCalendar by YCS — Period & cycle tracker

> Period & cycle tracker (iPhone/iPad app by Nicolai Chirca.)

- Source: https://appshunter.io/ios/app/cyclecalendar-by-ycs/id6796164901 (this page in markdown: same URL + `.md`)
- Developer: [Nicolai Chirca](https://appshunter.io/developer/6779471125)
- Category: Health & Fitness, Lifestyle
- Price: $1.99 with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 8 MB
- Languages: American English, Arabic, Bangla, Catalan, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 24 more
- Released: 2026-08-18
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/cyclecalendar-by-ycs/id6796164901/reviews.md

## What is CycleCalendar by YCS?

CycleCalendar helps you track menstrual cycles on your device - privately, with optional cloud sync if you create an account.

WHAT YOU CAN DO
- Record period (phase) start and end, with notes
- See your cycle day and a simple progress bar on Home
- View calendar colors for menstruation, estimated fertile window, and estimated ovulation day
- Log symptoms (flow, pain, mood, energy, and more) and optional temperature
- Browse full cycle history and personal statistics (average cycle/phase length, temperature, symptom patterns)
- Get local reminders around predicted period start/end (Yes / Not yet)


HOW ESTIMATES WORK
CycleCalendar stores your entered period dates and learns average cycle and phase length from your history (defaults: 28-day cycle, 5-day period when you start). From those averages it estimates:
- next period start
- period end while a period is active (until you confirm actual end)
- ovulation day near mid-cycle
- a fertile window around ovulation for personal awareness only

These markers are algorithmic estimates for personal tracking. They are not medical advice, not a fertility prescription, and not a contraceptive method. Always use reliable contraception and medical advice for pregnancy prevention and health decisions.

PRIVACY & ACCESS
- Works without creating an account (guest mode on the device)
- Optional Sign in with Apple, Google, or email for multi-device sync
- 28-day free device trial, then an auto-renewable monthly Premium subscription for full write features after trial
- Purchase and restore work with your Apple ID-app registration is not required

Subscription details are presented in the app with pricing from the App Store. Manage or cancel in Settings → Apple ID → Subscriptions.

## Pricing and in-app purchases

Base price: $1.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |



## Version history (last 1 release)

### 1.0 — 2026-08-18

No release notes.

## More apps by Nicolai Chirca

- [SwapperHub](https://appshunter.io/ios/app/swapperhub/id6779470703)
- [MedReminder by YCS](https://appshunter.io/ios/app/medreminder-by-ycs/id6792616782)
- [BreathingExercise by YCS](https://appshunter.io/ios/app/breathingexercise-by-ycs/id6799638812)

All apps by Nicolai Chirca: https://appshunter.io/developer/6779471125

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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 2026-08-30.*