# MomoCalendar

> Period, Ovulation & Fertility

Canonical page: [https://chrome-stats.com/d/id6769393682](https://chrome-stats.com/d/id6769393682)

## Overview

- **ID:** `id6769393682`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** SiU Ahn
- **Category:** Health & Fitness
- **Version:** 1.1.0
- **Last updated:** 2026-08-21
- **First published:** 2026-05-15
- **Size:** 38 MB
- **Data as of:** 2026-09-05
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/momocalendar/id6769393682)
- **Website:** [https://www.reactiveworks.dev](https://www.reactiveworks.dev/)
- **Privacy policy:** [https://reactiveworks.blogspot.com/2026/05/momocalendar-privacy-policy.html](https://reactiveworks.blogspot.com/2026/05/momocalendar-privacy-policy.html)

## Description

Log your last period once — get auto predictions for next period, fertile window, and ovulation day. Track flow, pain, mood, pill & relations. PIN-locked.

Never wonder when your next period is coming again.

MomoCalendar is the simplest cycle tracker. Log your last period start date once, and the app auto-predicts your next period, fertile window, and ovulation day. Track flow, pain, mood, contraception, and intimate relations privately — all in one beautiful calendar.

[ Key Features ]

▶ Smart Predictions
• Auto-predict next period, fertile window, ovulation day
• Personalized average cycle / period length (fully customizable)
• Toggle fertile window display ON / OFF

▶ Daily Logging
• Flow level (none, light, normal, heavy)
• Pain score 0–10
• Multi-select symptoms (headache, cramps, bloating, acne, and more)
• Mood (good, calm, sensitive, sad, anxious)
• Free-form memo

▶ Pill & Relations
• Separate logs for oral contraceptive + emergency contraception
• Private log for protected / unprotected relations

▶ Calendar + Statistics
• Beautiful month view at a glance
• Visualize symptom, mood, pill, and relation patterns over time
• Track average cycle length + prediction accuracy

▶ Reminders & Security
• Period start, ovulation day, and daily log reminders
• PIN-protected app lock — no one can open it without your code
• Light / dark theme + Korean / English UI

[ Made For You If ]

• Your cycle is irregular and predictions matter
• You're using natural family planning or trying to conceive
• You keep forgetting your daily pill
• You want to see symptom + mood patterns in real data
• You're tired of ad-stuffed, feature-bloated trackers

[ Privacy First ]

• Your data is encrypted in transit and tied to your account only
• No third-party sharing beyond ad personalization
• Full data deletion on account removal (server + device)
• PIN lock keeps your data safe even if your phone is lost

[ Account & Sync ]

• Sign in with Google, Apple, or Email
• Auto-sync across device changes or reinstalls

[ Contact ]

• Feedback: siwooeo@gmail.com
• Website: https://www.reactiveworks.dev

MomoCalendar is not a substitute for medical diagnosis or treatment. Always consult a qualified OB/GYN for any concerning symptoms.

## Rankings

- #1,381,463 — Overall

## Similar extensions and apps

- [Period Calendar-Period Tracker](https://chrome-stats.com/d/id6757180500)
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- [Menstrual Calendar FMC](https://chrome-stats.com/d/id292760731) — 4.60 / 5
- [Period Tracker: Cycle Calendar](https://chrome-stats.com/d/id1541331292) — 4.60 / 5
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- [Modern Fertility Tracker](https://chrome-stats.com/d/id1569865429) — 4.70 / 5
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- [Period Tracker \`](https://chrome-stats.com/d/id6744693445) — 4.00 / 5
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- [Femiloops: Period Calendar App](https://chrome-stats.com/d/id6766020789)
- [Period Tracker & Calendar](https://chrome-stats.com/d/id6783325525)
- [Period Log](https://chrome-stats.com/d/id494474881) — 4.70 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6769393682)