# duck vs 평온한 마음

duck and 평온한 마음 are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

duck ships an update every 6 weeks, 평온한 마음 monthly. The most recent releases landed on October 30, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | duck | 평온한 마음 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (12 ratings)](https://appshunter.io/ios/app/duck-z/id1572692131/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 98.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Ad-supported | Ad-supported |
| Size | 54 MB | 18 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SEUNGHWAN LEE](https://appshunter.io/developer/1529908887) | [jihyeon kang](https://appshunter.io/developer/1682011820) |

## What reviewers say

### duck

[App page](https://appshunter.io/ios/app/duck-z/id1572692131)

This app allows users to create and share a digital diary with friends and family. Decorate entries with stickers, build memories through comments, and stay updated with notifications. Enjoy a personalized experience with customizable themes.

**Highlights:** Decorate diary entries, Share daily life with friends, Use stickers for colorful records, Build memories with comments, Receive diary and comment notifications, Dark and Light themes

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

**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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is duck free?

duck 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 duck or 평온한 마음 have ads?

Both duck and 평온한 마음 show ads.

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

duck ships an update every 6 weeks, and 평온한 마음 monthly. Most recently, duck was updated on October 30, 2026 and 평온한 마음 on October 17, 2026.

---

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