# 렘수면 vs 루딘프

렘수면 and 루딘프 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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.

렘수면 ships an update every 10 days, 루딘프 every 11 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 렘수면 | 루딘프 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 11 days |
| Size | 26 MB | 60 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Insight&myung, LLC](https://appshunter.io/developer/1752352451) | [Seung Hyun Oh](https://appshunter.io/developer/1896164753) |

## What reviewers say

### 렘수면

[App page](https://appshunter.io/ios/app/id6764481553)

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

**In-app purchases:** none


### 루딘프

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

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

**In-app purchases:** none


## Frequently asked questions

### Is 렘수면 free?

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

### Is 루딘프 free?

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

### Do 렘수면 or 루딘프 have ads?

Neither 렘수면 nor 루딘프 shows ads.

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

렘수면 ships an update every 10 days, and 루딘프 every 11 days. Most recently, 렘수면 was updated on October 28, 2026 and 루딘프 on October 25, 2026.

---

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