# GKF Studio vs Pregmate Ovulation Tracker

The clearest difference is in-app purchases: GKF Studio at none against Pregmate Ovulation Tracker's 12. GKF Studio also leads on review sentiment (100% vs 89%) and device support (3 vs 1). Pregmate Ovulation Tracker's advantage is update cadence (fortnightly vs every 44 months) and ratings volume (13K vs 3). On price, rating and ads there is nothing between them.

Both are free to download. Pregmate Ovulation Tracker sells 12 in-app purchases, starting at $9.99 per month. GKF Studio asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for GKF Studio against 4.9 for Pregmate Ovulation Tracker. That said, the two scores are not equally well evidenced: Pregmate Ovulation Tracker has 13K ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 100% of GKF Studio's written reviews are positive against 89% of Pregmate Ovulation Tracker's.

GKF Studio ships an update every 44 months, Pregmate Ovulation Tracker fortnightly. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | GKF Studio | Pregmate Ovulation Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/gkf-studio/id1537596785/reviews)** | [4.9 (13K ratings)](https://appshunter.io/ios/app/pregmate-ovulation-tracker/id1610694094/reviews) |
| Number of ratings | 3 | **13K** |
| Positive reviews | **100.0% of reviews** | 88.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 44 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#132** |
| Size | 68 MB | 208 MB |
| Requires iOS | **11.0.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Get Kristen Fit LLC](https://appshunter.io/developer/1537597147) | [Asteria LLC](https://appshunter.io/developer/1830083794) |

## What reviewers say

### GKF Studio

[App page](https://appshunter.io/ios/app/gkf-studio/id1537596785)

Book fitness sessions and view class schedules directly through the app. Stay updated on class times and reserve your spot easily. Manage your fitness journey conveniently.

**Highlights:** View class schedules, Book fitness sessions, Manage bookings, Stay updated on class times, Easy session reservation

**Features:** macOS Compatibility

**In-app purchases:** none


### Pregmate Ovulation Tracker

[App page](https://appshunter.io/ios/app/pregmate-ovulation-tracker/id1610694094)

**Currently charting:** #132 Top Grossing · Health & Fitness, #146 Top Free · Health & Fitness (US App Store)

Easily track ovulation, predict fertile days, and understand your cycle. Scan test strips with your phone's camera for automatic analysis. Get personalized insights and reminders to maximize your chances of conception.

**Highlights:** Accurate ovulation predictions, Test strip reader with auto-detection, Personalized fertility window tracking, Period and cycle tracking, Daily insights and reminders, Easy-to-read reports

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pregmate Pro Plan | $9.99 | per month |
| Pregmate Pro Plan | $9.99 | per month |
| Pregmate Pro Plan | $19.99 | per month |
| Pregmate Pro Plan | $19.99 | per month |
| Pregmate Pro Plan | $29.99 | per year |
| Pregmate Pro Plan | $39.99 | per year |
| One-time offer | $49.99 | per year |
| Pregmate Pro Plan | $59.99 | per year |
| Pregmate Pro Plan | $59.99 | per year |
| Pregmate Pro Plan | $59.99 | per year |
| Pregmate Pro Plan | $69.99 | per year |
| Pregmate Pro Plan | $69.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 📷 Ability to take photos of test strips
- 🗓️ Helpful for tracking cycle and ovulation
- 💰 Great value for money
- 🔍 Accurate ovulation predictions

**What reviewers complain about**

- 🐛 Ovulation predictions not always accurate
- 🔀 Inconsistent fertility window indicators across app
- 🔍 Limited ability to manually adjust cycle data

**Reported bugs**

- Picture feature doesn't accurately interpret test results
- Navigation issues when adding historical cycle data

**Requested features**

- Add basal body temperature tracking
- Improve fertility window prediction accuracy
- Allow more customization of cycle data


## Frequently asked questions

### Is GKF Studio free?

GKF Studio is free to download, with no in-app purchases.

### Is Pregmate Ovulation Tracker free?

Pregmate Ovulation Tracker is free to download, with in-app purchases available.

### Which has better reviews, GKF Studio or Pregmate Ovulation Tracker?

GKF Studio is rated higher. GKF Studio averages 5.0 out of 5 from 3 ratings, while Pregmate Ovulation Tracker averages 4.9 from 13K ratings.

### Do GKF Studio or Pregmate Ovulation Tracker have ads?

Neither GKF Studio nor Pregmate Ovulation Tracker shows ads.

### Which is updated more often, GKF Studio or Pregmate Ovulation Tracker?

GKF Studio ships an update every 44 months, and Pregmate Ovulation Tracker fortnightly. Most recently, GKF Studio was updated on October 16, 2026 and Pregmate Ovulation 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.*