# Period Log

> Cycle Tracker & Moon Calendar

Canonical page: [https://chrome-stats.com/d/id494474881](https://chrome-stats.com/d/id494474881)

## Overview

- **ID:** `id494474881`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** 倩 赵
- **Category:** Health & Fitness
- **Rating:** 4.70 / 5 (1,211 ratings)
- **Version:** 8.0
- **Last updated:** 2026-01-17
- **First published:** 2012-01-13
- **Size:** 54 MB
- **Data as of:** 2026-09-21
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/period-log/id494474881)
- **Website:** [http://www.maxwellapps.com/](http://www.maxwellapps.com/)
- **Privacy policy:** [http://www.maxwellapps.com/privacy.html](http://www.maxwellapps.com/privacy.html)

## Description

Period Log helps you track fertility and menstrual cycles with a rich set of inputs. Record period days, cycle days, fertile windows, ovulation, mood, symptoms, weight, temperature, notes, and more, all presented in a clear calendar view for quick insight.

It predicts upcoming periods and fertile days, offers reminders and privacy features (passwords and Touch ID), supports backups, Health app transfer, and an Apple Watch companion. Includes a pregnancy calculator module and helpful help docs.

## Rankings

- #50,451 — Overall

## Review summary

Period Log is widely praised for being easy to use and highly reliable, with long-term tracking and thorough logging for doctor visits. It offers helpful period/ovulation forecasts and is free to use, though ads can be intrusive. Common downsides include ad annoyance, limited handling of irregular cycles, occasional data-entry glitches, and a dated UI. Overall it's a trusted, feature-rich tool for years of cycle tracking, albeit with some usability annoyances.

### Pros

- Easy to use and user-friendly layout
- Accurate and reliable cycle tracking with long-term trust
- Comprehensive logging of symptoms, moods, flow, notes, and duration (helpful for doctor visits)
- Free to use (ad-supported) with option to upgrade to remove ads and access stats
- Helpful period and ovulation forecasting for planning

### Cons

- Annoying ads and desire for ad removal (primarily via paid upgrade)
- Limited adaptability to irregular/non-28-day cycles; predictions often default to 28 days
- Occasional data-entry glitches and notes/items not always smooth to add
- UI/graphics feel dated and some users find it not very intuitive

## Similar extensions and apps

- [Period Log Pro](https://chrome-stats.com/d/id491296322) — 4.90 / 5
- [Period Log Tracker](https://chrome-stats.com/d/id6775921894)
- [Period Tracker: Cycle Calendar](https://chrome-stats.com/d/id1541331292) — 4.60 / 5
- [Period Tracker - Cycle Log App](https://chrome-stats.com/d/id6474762886) — 4.30 / 5
- [Periods Tracker: Cycle Log](https://chrome-stats.com/d/id6758897581)
- [Period Log - Lite Tracker、.](https://chrome-stats.com/d/id6758512211)
- [My Period Tracker & Ovulation](https://chrome-stats.com/d/id6760992177)
- [Period Tracker & Ovulation Log](https://chrome-stats.com/d/id6780409077)
- [Cycle: period tracker](https://chrome-stats.com/d/id6748954495) — 5.00 / 5
- [Period & Cycle Calendar](https://chrome-stats.com/d/id6758566004)
- [Period Calendar-Period Tracker](https://chrome-stats.com/d/id6757180500)
- [Period Tracker - Cycle Log](https://chrome-stats.com/d/id6760383501) — 4.60 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/id494474881)