# 만세력 8자어때 vs duck

The clearest difference is in-app purchases: duck at none against 만세력 8자어때's 3. 만세력 8자어때's advantage is ads (none vs shown) and update cadence (every 10 days vs every 6 weeks). On price, rating, review sentiment and device support there is nothing between them.

Both are free to download. 만세력 8자어때 sells 3 in-app purchases, starting at $6.99 per month. duck asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for 만세력 8자어때 against 4.8 for duck. Both are backed by a comparable volume of ratings — 48 and 12 respectively. Written reviews are what separate them: 91% of 만세력 8자어때's written reviews are positive against 98% of duck's.

만세력 8자어때 ships an update every 10 days, duck every 6 weeks. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 만세력 8자어때 | duck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (48 ratings)](https://appshunter.io/ios/app/8/id1491189186/reviews) | **[4.8 (12 ratings)](https://appshunter.io/ios/app/duck-z/id1572692131/reviews)** |
| Number of ratings | **48** | 12 |
| Positive reviews | 90.9% of reviews | **98.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 219 MB | 54 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [OUr](https://appshunter.io/developer/536280661) | [SEUNGHWAN LEE](https://appshunter.io/developer/1529908887) |

## What reviewers say

### 만세력 8자어때

[App page](https://appshunter.io/ios/app/8/id1491189186)

This app offers a precise astrological calculation tool, going beyond simple date calculations. It provides in-depth analysis, learning resources, and a unique diary system to track and understand personal fortunes. Designed for both beginners and experts, it helps users explore their destiny with detailed reports and comparative data.

**Highlights:** Global coordinate and time zone calculation, Automatic time difference correction, Extensive fortune-telling encyclopedia, Visual representation of astrological concepts, Personalized fortune diary and analysis, Expert-level analysis UI, In-depth fortune and compatibility readings

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30일 정기결제 | $6.99 | per month |
| 90일 정기결제 | $14.99 | per 3 months |
| 1년 정기결제 | $39.99 | per year |


### 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


## Frequently asked questions

### Is 만세력 8자어때 free?

만세력 8자어때 is free to download, with in-app purchases available.

### Is duck free?

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

### Which has better reviews, 만세력 8자어때 or duck?

duck is rated higher. 만세력 8자어때 averages 4.8 out of 5 from 48 ratings, while duck averages 4.8 from 12 ratings.

### Do 만세력 8자어때 or duck have ads?

duck shows ads; 만세력 8자어때 does not.

### Which is updated more often, 만세력 8자어때 or duck?

만세력 8자어때 ships an update every 10 days, and duck every 6 weeks. Most recently, 만세력 8자어때 was updated on October 29, 2026 and duck 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.*