# RELAXX vs Mersea  メルシー

The clearest difference is update cadence: Mersea  メルシー at every 6 weeks against RELAXX's every 41 months. RELAXX's advantage is iOS requirement (8.0 vs 11.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RELAXX ships an update every 41 months, Mersea  メルシー every 6 weeks. Both last shipped on November 2, 2026.

## The numbers

| Metric | RELAXX | Mersea  メルシー |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 28.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 3 MB | 89 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [shingo kamei](https://appshunter.io/developer/1256845824) | [Womens Kampo Inc.](https://appshunter.io/developer/1220678073) |

## What reviewers say

### RELAXX

[App page](https://appshunter.io/ios/app/relaxx/id1115030480)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 RELAXX free?

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

### Is Mersea  メルシー free?

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

### Do RELAXX or Mersea  メルシー have ads?

Neither RELAXX nor Mersea  メルシー shows ads.

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

RELAXX ships an update every 41 months, and Mersea  メルシー every 6 weeks. Most recently, RELAXX was updated on November 2, 2026 and Mersea  メルシー on November 2, 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.*