# 주주 vs 루딘프

The clearest difference is in-app purchases: 루딘프 at none against 주주's 1. 루딘프 also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.5). 주주's advantage is update cadence (every 5 days vs every 11 days). On price and device support there is nothing between them.

Both are free to download. 주주 sells 1 in-app purchase, starting at $0.99 per month. 루딘프 asks for nothing beyond the download.

주주 ships an update every 5 days, 루딘프 every 11 days. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 주주 | 루딘프 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 11 days |
| Size | 162 MB | 60 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [YOUNGJUN NOH](https://appshunter.io/developer/1861375550) | [Seung Hyun Oh](https://appshunter.io/developer/1896164753) |

## What reviewers say

### 주주

[App page](https://appshunter.io/ios/app/id6761988099)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| zuzoo pro | $0.99 | per month |


### 루딘프

[App page](https://appshunter.io/ios/app/ai/id6766019247)

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

**In-app purchases:** none


## Frequently asked questions

### Is 주주 free?

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

### Is 루딘프 free?

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

### Do 주주 or 루딘프 have ads?

주주 shows ads; 루딘프 does not.

### Which is updated more often, 주주 or 루딘프?

주주 ships an update every 5 days, and 루딘프 every 11 days. Most recently, 주주 was updated on October 31, 2026 and 루딘프 on October 25, 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.*