# MyDays X vs Harmony

The clearest difference is rating: Harmony at 4.7 against MyDays X's 3.2. Harmony also leads on ratings volume (10K vs 759). MyDays X's advantage is review sentiment (54% vs 36%) and device support (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. MyDays X sells 7 in-app purchases, starting at $7.99 per month and Harmony sells 13 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Harmony holds the better App Store score, 4.7 against 3.2. That said, the two scores are not equally well evidenced: Harmony has 10K ratings behind it against 759, so its average is the more settled of the two. Written reviews complicate that: 54% of MyDays X's written reviews are positive against 36% of Harmony's, so the app with the better star average is not the one people write more warmly about.

MyDays X ships an update weekly, Harmony every 6 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | MyDays X | Harmony |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (759 ratings)](https://appshunter.io/ios/app/mydays-x/id470179308/reviews) | **[4.7 (10K ratings)](https://appshunter.io/ios/app/harmony-cycle-syncing-period/id6736703227/reviews)** |
| Number of ratings | 759 | **10K** |
| Positive reviews | **53.8% of reviews** | 35.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 51 MB | 180 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Christian Mueller](https://appshunter.io/developer/346546766) | [Rocapine](https://appshunter.io/developer/1755706866) |

## What reviewers say

### MyDays X

[App page](https://appshunter.io/ios/app/mydays-x/id470179308)

This app helps women track their menstrual cycles, predict fertile days, and monitor various health symptoms. It offers intelligent notifications, a community chat, and detailed tracking options for a comprehensive overview of reproductive health.

**Highlights:** Period and ovulation prediction, Fertile day tracking, Symptom and mood logging, Pregnancy mode, Community chat, Birth control tracking, Password lock

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Ad Free | $7.99 | per month |
| 3 months Ad free | $19.99 | per 3 months |
| 1 Year Ad Free | $29.99 | per year |
| Lifetime Ad free Mega Offer 3 | $32.99 | one-time |
| Lifetime Ad free Super Offer | $34.99 | one-time |
| Lifetime Ad free offer | $39.99 | one-time |
| Lifetime Ad free | $79.99 | one-time |

**What reviewers like**

- ⭐ Accurate period and ovulation tracking
- 📆 Helpful for planning and conceiving
- 💻 Easy to use and navigate
- 🗓️ Customizable tracking options
- 🔍 Detailed history and data insights

**What reviewers complain about**

- 💢 Excessive and intrusive ads
- ⏱️ Long ad wait times disrupting usage
- 🐛 Crashes and bugs after updates
- 🔒 Privacy concerns with location tracking
- 🔄 Difficulty transferring data to new devices

**Reported bugs**

- App crashing on launch after updates
- Calendar and data not syncing correctly
- Inaccurate ovulation and period predictions
- Inability to access historical data

**Requested features**

- Pregnancy mode to maintain data accuracy
- Symptom tracking beyond just mood and weight
- Improved ad-free or reduced ad experience
- Better data export and backup options
- Integration with health tracking platforms


### Harmony

[App page](https://appshunter.io/ios/app/harmony-cycle-syncing-period/id6736703227)

This app helps you understand and sync your lifestyle with your natural body rhythms. It offers personalized guidance for energy, meals, movement, and mindset based on your cycle phase. It also includes smart tracking, daily insights, and an AI assistant for daily organization and self-awareness.

**Highlights:** Cycle Syncing Guidance, Smart Cycle Tracking, Daily Insights & Rituals, AI Lifestyle Assistant, Partner Connection, Privacy-Focused Data

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $4.99 | per 7 days |
| Harmony Monthly Plan | $9.99 | per month |
| Monthly Subscription | $14.99 | per month |
| Harmony Premium Pan | $14.99 | per month |
| Harmony Yearly Plan | $34.99 | per year |
| Yearly Premium | $34.99 | per year |
| Harmony Yearly Plan | $34.99 | per year |
| Harmony Premium | $39.99 | per 3 months |
| Premium Subscription | $39.99 | per 6 months |
| Yearly Subscription | $49.99 | per year |
| Yearly Subscription | $59.99 | per year |
| Harmony Yearly Plan | $79.99 | per year |
| Harmony Yearly Plan | $89.99 | per year |

**What reviewers like**

- 👍 Empowering experience
- 🚀 Easy to use
- 💡 Personalized insights
- 👍 Helpful for managing cycle
- 👍 Informative and useful

**What reviewers complain about**

- 🐛 Inaccurate calendar and period tracking
- 💰 Paid subscription required
- 🔧 Needs more customization options
- 👎 Issues with selecting period dates

**Reported bugs**

- Calendar issues with incorrect period dates
- Inability to select accurate period dates

**Requested features**

- More community features
- Longer meditation exercises
- Additional recipes and meal plans


## Frequently asked questions

### Is MyDays X free?

MyDays X is free to download, with in-app purchases available.

### Is Harmony free?

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

### Which has better reviews, MyDays X or Harmony?

Harmony is rated higher. MyDays X averages 3.2 out of 5 from 759 ratings, while Harmony averages 4.7 from 10K ratings.

### Do MyDays X or Harmony have ads?

Both MyDays X and Harmony show ads.

### Which is updated more often, MyDays X or Harmony?

MyDays X ships an update weekly, and Harmony every 6 days. Most recently, MyDays X was updated on October 26, 2026 and Harmony on October 27, 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.*