# Period Log vs Premom

The clearest difference is in-app purchases: Period Log at none against Premom's 10. Period Log also leads on review sentiment (92% vs 70%). Premom's advantage is ads (none vs shown) and update cadence (weekly vs every 7 months). On price, rating and device support there is nothing between them.

Both are free to download. Premom sells 9 in-app purchases, starting at $12.99 per month. Period Log asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Period Log against 4.8 for Premom. That said, the two scores are not equally well evidenced: Premom has 61K ratings behind it against 1.2K, so its average is the more settled of the two. Written reviews are what separate them: 92% of Period Log's written reviews are positive against 70% of Premom's.

Period Log ships an update every 7 months, Premom weekly. The most recent releases landed on November 6, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Period Log | Premom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.2K ratings)](https://appshunter.io/ios/app/period-log/id494474881/reviews) | **[4.8 (61K ratings)](https://appshunter.io/ios/app/premom-ovulation-tracker-pcos/id1279295922/reviews)** |
| Number of ratings | 1.2K | **61K** |
| Positive reviews | **91.9% of reviews** | 69.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | **Ad-supported** | Freemium |
| Best chart rank | — | **#46** |
| Size | 54 MB | 270 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [倩 赵](https://appshunter.io/developer/376557917) | [Easy Healthcare Corporation](https://appshunter.io/developer/1159631019) |

## What reviewers say

### Period Log

[App page](https://appshunter.io/ios/app/period-log/id494474881)

Track and predict your menstrual cycles, fertility, and ovulation. Log period days, flow, mood, symptoms, and more. Receive timely reminders and protect your data with password protection.

**Highlights:** Track period, ovulation, and fertile days, Predict future cycles and fertile windows, Log moods, symptoms, and flow, Visual calendar with icons, Customizable reminders, Password and Touch ID protection, Pregnancy mode with due date calculation

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 📆 Helpful for tracking cycles
- ⏰ Accurate period predictions
- 📝 Ability to log symptoms and moods
- 💻 Simple and straightforward interface

**What reviewers complain about**

- 💸 Too many ads in free version
- 🐛 Occasional bugs or glitches
- 🔄 Difficulty editing or deleting entries
- 🔍 Limited customization options
- 📊 Inaccurate ovulation predictions for some users

**Reported bugs**

- Data not saving properly after app updates
- Calendar view not displaying all entries correctly
- Notifications not working as expected

**Requested features**

- Option to remove ads
- Ability to sync data across devices
- More detailed symptom and mood tracking
- Customizable reminders and notifications
- Integration with other health apps


### Premom

[App page](https://appshunter.io/ios/app/premom-ovulation-tracker-pcos/id1279295922)

**Currently charting:** #46 Top Grossing · Health & Fitness, #108 Top Free · Health & Fitness (US App Store)

This app helps women track their menstrual cycles, predict ovulation, and monitor fertility. It offers personalized guidance, digital ovulation test reading, and basal body temperature charting to aid in conception. Features include cycle analysis, symptom tracking, and expert consultations for a smoother fertility journey.

**Highlights:** Ovulation test scanning and LH level quantification, Automatic basal body temperature (BBT) charting, PCOS AI for interpreting BBT and OPK trends, Partner account linking for shared updates, Pregnancy mode with due date calculation and tips, Period logging calendar with symptom tracking, Virtual consultations with fertility experts

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premom | $12.99 | per month |
| Premium (US) | $20.49 | per 3 months |
| Premium | $20.49 | per 3 months |
| Premom Fertility Tracker | $23.49 | per 3 months |
| Premium (US) | $26.99 | per 3 months |
| Premom | $35.99 | per 6 months |
| Premium | $37.99 | per 6 months |
| Premium | $37.99 | per 6 months |
| Premium | $37.99 | per 6 months |

**What reviewers like**

- 🚀 Accurate ovulation tracking
- 👍 Easy to use app
- 💡 Helpful community support
- 🚀 Affordable ovulation tests
- 👍 Detailed cycle analysis

**What reviewers complain about**

- 🐛 Inconsistent data tracking
- 🐛 Frequent app crashes
- 🐛 Inaccurate ovulation predictions
- 🔒 Privacy concerns with data sharing
- 🔋 Drains battery quickly

**Reported bugs**

- Inability to log miscarriage data
- Syncing issues with Bluetooth thermometers
- Ovulation test results not accurately detected

**Requested features**

- Ability to edit past data entries
- Option to switch between Celsius and Fahrenheit
- More customization options for the calendar view
- Enhanced data export capabilities


## Frequently asked questions

### Is Period Log free?

Period Log is free to download, with no in-app purchases.

### Is Premom free?

Premom is free to download, with in-app purchases available.

### Which has better reviews, Period Log or Premom?

Premom is rated higher. Period Log averages 4.7 out of 5 from 1.2K ratings, while Premom averages 4.8 from 61K ratings.

### Do Period Log or Premom have ads?

Period Log shows ads; Premom does not.

### Which is updated more often, Period Log or Premom?

Period Log ships an update every 7 months, and Premom weekly. Most recently, Period Log was updated on November 6, 2026 and Premom on November 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*