# Fertility Friend FF Tracker vs Euki

The clearest difference is rating: Fertility Friend FF Tracker at 4.8 against Euki's 4.1. Fertility Friend FF Tracker also leads on ratings volume (7.4K vs 116) and update cadence (weekly vs every 3 weeks). Euki's advantage is in-app purchases (none vs 4) and iOS requirement (13.4 vs 16.6). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Fertility Friend FF Tracker sells 4 one-off in-app purchases. Euki asks for nothing beyond the download.

Fertility Friend FF Tracker holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Fertility Friend FF Tracker has 7.4K ratings behind it against 116, so its average is the more settled of the two. Written reviews point the same way: 78% of Fertility Friend FF Tracker's written reviews are positive against 70% of Euki's.

Fertility Friend FF Tracker ships an update weekly, Euki every 3 weeks. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Fertility Friend FF Tracker | Euki |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (7.4K ratings)](https://appshunter.io/ios/app/fertility-friend-ff-tracker/id443919067/reviews)** | [4.1 (116 ratings)](https://appshunter.io/ios/app/euki/id1469213846/reviews) |
| Number of ratings | **7.4K** | 116 |
| Positive reviews | **77.9% of reviews** | 70.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Freemium | **Free** |
| Size | 33 MB | 51 MB |
| Requires iOS | 16.6 | **13.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Tamtris Web Services Inc.](https://appshunter.io/developer/292760734) | [Euki, Inc.](https://appshunter.io/developer/1749121306) |

## What reviewers say

### Fertility Friend FF Tracker

[App page](https://appshunter.io/ios/app/fertility-friend-ff-tracker/id443919067)

This app helps women track their ovulation and fertile days with advanced charting tools. It provides personalized insights into your cycle, helping you understand your fertility signs and maximize your chances of conception. Millions of women trust it for accurate cycle analysis and pregnancy tracking.

**Highlights:** Ovulation detection, Fertile window prediction, BBT and cervical fluid tracking, Period and symptom logging, Interactive fertility charts, TTC educational library, Pregnancy monitoring

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 Days VIP Membership | $10.99 | one-time |
| 90 Days VIP Membership | $21.99 | one-time |
| 1 Year VIP - Special Rate | $23.99 | one-time |
| 1 Year VIP Membership | $45.99 | one-time |

**What reviewers like**

- 🚀 Accurate predictions
- 💡 Comprehensive tracking features
- 👍 Helpful educational resources
- 🚀 Detailed data analysis
- 🚀 Customizable symptom tracking

**What reviewers complain about**

- 🐛 Frequent app crashes
- 💰 Expensive premium features
- 🔒 Privacy concerns
- 🕰️ Outdated user interface
- 🐛 Inconsistent data syncing

**Reported bugs**

- Unable to create account
- Randomly deleting custom data
- Inaccurate ovulation predictions
- Pregnancy data not transferring

**Requested features**

- Offline mode with data syncing
- Integration with Apple Health
- More affordable subscription options
- Improved community features
- Streamlined data entry process


### Euki

[App page](https://appshunter.io/ios/app/euki/id1469213846)

This app offers comprehensive sexual health information and tracking tools with a strong emphasis on user privacy. It allows for customizable health tracking, period predictions, and access to a content library vetted by experts. Additionally, it features a care navigator to find reproductive health services.

**Highlights:** Customizable health tracking, Period and cycle predictions, Content library on sexual health, Care Navigator for health services, PIN protection for data, Anonymous data storage

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🔒 Strong privacy protection and data security
- 💰 Completely free with no paywalls or premium features
- 📱 User-friendly and intuitive interface
- 🎓 Comprehensive reproductive health education resources
- 🔐 PIN protection with fake password decoy feature

**What reviewers complain about**

- 🐛 Frequent app crashes and glitches
- ❌ No dark mode option
- 📤 Cannot export or transfer data between devices
- ⏰ Lacks notification/reminder features for upcoming periods
- 🎨 Unappealing graphics and design aesthetic (subjective)

**Reported bugs**

- App crashes when accessing certain features
- Calendar display missing days
- Randomly added contraceptive shot entries to all logged days
- App crashes when editing past bleeding logs
- Cycle length recalculation not updating after new data

**Requested features**

- Dark mode support
- Data export/import functionality
- Period and ovulation notifications/reminders
- Additional symptom tracking options (back pain, leg cramps, sleep changes, bowel changes, memory issues)
- Basal body temperature tracking


## Frequently asked questions

### Is Fertility Friend FF Tracker free?

Fertility Friend FF Tracker is free to download, with in-app purchases available.

### Is Euki free?

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

### Which has better reviews, Fertility Friend FF Tracker or Euki?

Fertility Friend FF Tracker is rated higher. Fertility Friend FF Tracker averages 4.8 out of 5 from 7.4K ratings, while Euki averages 4.1 from 116 ratings.

### Do Fertility Friend FF Tracker or Euki have ads?

Neither Fertility Friend FF Tracker nor Euki shows ads.

### Which is updated more often, Fertility Friend FF Tracker or Euki?

Fertility Friend FF Tracker ships an update weekly, and Euki every 3 weeks. Most recently, Fertility Friend FF Tracker was updated on September 22, 2026 and Euki on September 23, 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.*