# 우체국 vs 평온한 마음

The clearest difference is review sentiment: 평온한 마음 at 100% against 우체국's 23%. 평온한 마음 also leads on update cadence (every 2 weeks vs every 2 months). 우체국's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, 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.

우체국 ships an update every 2 months, 평온한 마음 every 2 weeks. The most recent releases landed on September 27, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | 우체국 | 평온한 마음 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (9 ratings)](https://appshunter.io/ios/app/id435940000/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 22.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Ad-supported |
| Size | 16 MB | 11 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ePost](https://appshunter.io/developer/435913311) | [jihyeon kang](https://appshunter.io/developer/1682011820) |

## What reviewers say

### 우체국

[App page](https://appshunter.io/ios/app/id435940000)

**In-app purchases:** none


### 평온한 마음

[App page](https://appshunter.io/ios/app/id6447620095)

Find inner peace by using this application to strike a wooden fish. Focus on the resonant sound to clear your mind and manage your thoughts. It's a simple tool designed for mindfulness and stress relief.

**Highlights:** Strike a wooden fish, Focus on sound, Clear your mind, Manage thoughts, Achieve peace

**In-app purchases:** none


## Frequently asked questions

### Is 우체국 free?

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

### Is 평온한 마음 free?

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

### Do 우체국 or 평온한 마음 have ads?

평온한 마음 shows ads; 우체국 does not.

### Which is updated more often, 우체국 or 평온한 마음?

우체국 ships an update every 2 months, and 평온한 마음 every 2 weeks. Most recently, 우체국 was updated on September 27, 2026 and 평온한 마음 on September 13, 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.*