# kegg vs Harmony Within

The clearest difference is rating: Harmony Within at 5.0 against kegg's 3.9. Harmony Within also leads on review sentiment (100% vs 75%). kegg's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Harmony Within sells 2 in-app purchases, starting at $10.00 per month. kegg asks for nothing beyond the download.

Harmony Within holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: kegg has 143 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 75% of kegg's written reviews are positive against 100% of Harmony Within's.

kegg ships an update every 3 weeks, Harmony Within monthly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | kegg | Harmony Within |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (143 ratings)](https://appshunter.io/ios/app/kegg/id1462248924/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/harmony-within/id6475050527/reviews)** |
| Number of ratings | **143** | 2 |
| Positive reviews | 75.2% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 52 MB | 87 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Lady Technologies, Inc.](https://appshunter.io/developer/1462248923) | [Harmony Within Creations LLC](https://appshunter.io/developer/1723202542) |

## What reviewers say

### kegg

[App page](https://appshunter.io/ios/app/kegg/id1462248924)

This medical-grade device offers accurate fertility tracking by analyzing cervical fluid in just two minutes daily. It helps identify fertile windows for conception and provides insights into ovulation, while also offering guided pelvic floor exercises for health and recovery.

**Highlights:** Medical-grade fertility tracking, Cervical fluid analysis, Fertile window identification, Ovulation probability insights, Guided kegel exercises, Pelvic floor health optimization

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 💡 Provides insights into cycle
- 👍 Helpful community support
- 🚀 Convenient daily tracking
- 🚀 Accurate fertility predictions

**What reviewers complain about**

- 🐛 Buggy app with poor navigation
- 🐛 Inconsistent fertility predictions
- 🐛 Difficult to interpret data
- 🐛 Frequent login issues
- 🐛 Notifications don't always work

**Reported bugs**

- App freezes and crashes frequently
- Syncing issues between device and app
- Fertility predictions do not align with other methods
- Constant logout prompts disrupt user experience

**Requested features**

- Add ability to track period and symptoms
- Improve app design and user experience
- Provide more detailed data analysis and insights
- Integrate with other fertility tracking apps


### Harmony Within

[App page](https://appshunter.io/ios/app/harmony-within/id6475050527)

Access guided meditations, movement, and breathing exercises designed to reduce stress, improve sleep, and enhance overall well-being. Practices integrate mindfulness, somatic psychology, and affirmations for a holistic mind-body connection. Unlock progress tracking and offline access with a subscription.

**Highlights:** Guided meditation, Movement practices, Breathing exercises, Mindfulness integration, Progress tracking, Offline sync

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Harmony Wellness | $10.00 | per month |
| Harmony Fertility | $25.00 | per month |


## Frequently asked questions

### Is kegg free?

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

### Is Harmony Within free?

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

### Which has better reviews, kegg or Harmony Within?

Harmony Within is rated higher. kegg averages 3.9 out of 5 from 143 ratings, while Harmony Within averages 5.0 from 2 ratings.

### Do kegg or Harmony Within have ads?

Harmony Within shows ads; kegg does not.

### Which is updated more often, kegg or Harmony Within?

kegg ships an update every 3 weeks, and Harmony Within monthly. Most recently, kegg was updated on October 26, 2026 and Harmony Within on October 24, 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.*