# duck vs 포스텔러 만세력

The clearest difference is review sentiment: duck at 98% against 포스텔러 만세력's 59%. duck also leads on in-app purchases (none vs 6). 포스텔러 만세력's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. 포스텔러 만세력 sells 6 one-off in-app purchases. duck asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 6 weeks. Both last shipped on October 30, 2026.

## The numbers

| Metric | duck | 포스텔러 만세력 |
| --- | --- | --- |
| 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** | 58.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 54 MB | 94 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SEUNGHWAN LEE](https://appshunter.io/developer/1529908887) | [UN7QI3 Inc.](https://appshunter.io/developer/1262949137) |

## 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


### 포스텔러 만세력

[App page](https://appshunter.io/ios/app/id6480584804)

This app offers a comprehensive tool for exploring the wisdom of traditional East Asian astrology. It provides intuitive charts and explanations to help beginners and experts alike understand complex astrological concepts. Access personalized readings and connect with professional consultants for deeper insights.

**Highlights:** Intuitive charts and diagrams, Bilingual support (Korean/Chinese characters), Simplified terminology explanations, Personalized astrological readings, Support for professional astrological theories, Flexible time and location adjustments, Expert consultation service integration

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 복채 15개 | $0.99 | one-time |
| 복채 39개 | $2.99 | one-time |
| 복채 64개 | $4.99 | one-time |
| 복채 81개 | $6.99 | one-time |
| 복채 249개 | $19.99 | one-time |
| 복채 421개 | $34.99 | one-time |


## Frequently asked questions

### Is duck free?

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

### Is 포스텔러 만세력 free?

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

### Do duck or 포스텔러 만세력 have ads?

Both duck and 포스텔러 만세력 show ads.

### Which is updated more often, duck or 포스텔러 만세력?

duck ships an update every 6 weeks, and 포스텔러 만세력 every 6 weeks. Most recently, duck was updated on October 30, 2026 and 포스텔러 만세력 on October 30, 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.*