# Period Log vs Simple Caffeine Tracker

The clearest difference is ads: Simple Caffeine Tracker at none against Period Log's shown. Simple Caffeine Tracker also leads on update cadence (every 2 days vs every 7 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Period Log ships an update every 7 months, Simple Caffeine Tracker every 2 days. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Period Log | Simple Caffeine Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.2K ratings)](https://appshunter.io/ios/app/period-log/id494474881/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 91.9% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 54 MB | 26 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [倩 赵](https://appshunter.io/developer/376557917) | [LUCAS GUFFROY](https://appshunter.io/developer/1846832915) |

## 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


### Simple Caffeine Tracker

[App page](https://appshunter.io/ios/app/simple-caffeine-tracker/id6758615552)

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

**In-app purchases:** none


## Frequently asked questions

### Is Period Log free?

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

### Is Simple Caffeine Tracker free?

Simple Caffeine Tracker is free to download, with no in-app purchases.

### Do Period Log or Simple Caffeine Tracker have ads?

Period Log shows ads; Simple Caffeine Tracker does not.

### Which is updated more often, Period Log or Simple Caffeine Tracker?

Period Log ships an update every 7 months, and Simple Caffeine Tracker every 2 days. Most recently, Period Log was updated on November 1, 2026 and Simple Caffeine Tracker on October 25, 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.*