# Period Tracker by GP Apps vs Hydro Habit Pro

The clearest difference is ads: Hydro Habit Pro at none against Period Tracker by GP Apps's shown. Hydro Habit Pro also leads on update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Period Tracker by GP Apps sells 1 in-app purchase, starting at $9.99 per year and Hydro Habit Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Period Tracker by GP Apps ships an update every 2 months, Hydro Habit Pro every 2 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Period Tracker by GP Apps | Hydro Habit Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (79K ratings)](https://appshunter.io/ios/app/period-tracker-by-gp-apps/id330376830/reviews)** | — |
| Number of ratings | **79K** | — |
| Positive reviews | 91.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 64 MB | 55 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [GP Apps](https://appshunter.io/developer/289078803) | [Niels Lekkerkerk](https://appshunter.io/developer/6771687928) |

## What reviewers say

### Period Tracker by GP Apps

[App page](https://appshunter.io/ios/app/period-tracker-by-gp-apps/id330376830)

Easily track your menstrual cycles, predict future periods, and monitor fertility. Log symptoms, moods, and weight with detailed charts and customizable notes. Includes advanced modes for trying to conceive and pregnancy tracking, with privacy features and data backup.

**Highlights:** Period cycle tracking and prediction, Fertility and ovulation tracking, Symptom and mood logging, Weight and temperature tracking, Customizable notes and symptoms, Pregnancy mode and countdown, Data backup and export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Member | $9.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate period predictions
- 💡 Customizable symptom and mood tracking
- 📆 Helpful for planning around cycle
- 🤰 Useful for tracking fertility and pregnancy

**What reviewers complain about**

- 🐛 Irregular cycles not handled well
- 🔒 Concerns about data privacy and security
- 💰 Paywall for some features
- 🎨 Outdated or unappealing design

**Reported bugs**

- Period start/end dates not saving correctly
- Ovulation predictions often inaccurate
- Crashes or freezes when logging data

**Requested features**

- Add option to track irregular cycles
- Improve data backup and sync across devices
- Provide more customization options for layout and themes
- Integrate with other health tracking apps


### Hydro Habit Pro

[App page](https://appshunter.io/ios/app/hydro-habit-pro/id6771687926)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Freezes | $0.99 | one-time |


## Frequently asked questions

### Is Period Tracker by GP Apps free?

Period Tracker by GP Apps is free to download, with in-app purchases available.

### Is Hydro Habit Pro free?

Hydro Habit Pro is free to download, with in-app purchases available.

### Do Period Tracker by GP Apps or Hydro Habit Pro have ads?

Period Tracker by GP Apps shows ads; Hydro Habit Pro does not.

### Which is updated more often, Period Tracker by GP Apps or Hydro Habit Pro?

Period Tracker by GP Apps ships an update every 2 months, and Hydro Habit Pro every 2 weeks. Most recently, Period Tracker by GP Apps was updated on October 31, 2026 and Hydro Habit Pro 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.*