# Moon Style vs Mersea  メルシー

The clearest difference is review sentiment: Moon Style at 67% against Mersea  メルシー's 29%. Mersea  メルシー's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Moon Style sells 1 one-off in-app purchase. Mersea  メルシー asks for nothing beyond the download.

Moon Style ships an update every 4 months, Mersea  メルシー every 6 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Moon Style | Mersea  メルシー |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/moon-style/id407691498/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **66.7% of reviews** | 28.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 47 MB | 89 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Sankakudo Inc.](https://appshunter.io/developer/1048838619) | [Womens Kampo Inc.](https://appshunter.io/developer/1220678073) |

## What reviewers say

### Moon Style

[App page](https://appshunter.io/ios/app/moon-style/id407691498)

Track your menstrual cycle, ovulation, and fertility. Monitor your weight and body fat with diet support, and access lunar cycle-based yoga programs. Designed for women's comfort and health.

**Highlights:** Period and ovulation tracking, Diet and weight monitoring, Fertility and basal body temperature recording, Lunar cycle-based yoga programs, Cycle-based body fat analysis

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MoonStyle Yoga | Free | one-time |


### Mersea  メルシー

[App page](https://appshunter.io/ios/app/mersea/id1220678074)

This app offers personalized advice for creating a body more conducive to pregnancy, based on individual constitution. It provides support for the physical and emotional anxieties of those trying to conceive, with guidance on diet, exercise, sleep, and mental well-being.

**Highlights:** Personalized constitution analysis, Pregnancy-ready body advice, Diet, exercise, sleep, and mental care tips, Basal body temperature tracking, HealthKit integration for temperature data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Moon Style free?

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

### Is Mersea  メルシー free?

Mersea  メルシー is free to download, with no in-app purchases.

### Do Moon Style or Mersea  メルシー have ads?

Moon Style shows ads; Mersea  メルシー does not.

### Which is updated more often, Moon Style or Mersea  メルシー?

Moon Style ships an update every 4 months, and Mersea  メルシー every 6 weeks. Most recently, Moon Style was updated on November 1, 2026 and Mersea  メルシー on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*