# UMER vs 이에르로르

The clearest difference is device support: 이에르로르 at 3 against UMER's 1. 이에르로르 also leads on iOS requirement (13.0 vs 16.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

UMER ships an update every 10 months, 이에르로르 every 6 months. The most recent releases landed on October 8, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | UMER | 이에르로르 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 months** |
| Size | 74 MB | 20 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [(주)유메르컴퍼니](https://appshunter.io/developer/1630097196) | [HYERES LOR KOREA Co., LTD.](https://appshunter.io/developer/1763572780) |

## What reviewers say

### UMER

[App page](https://appshunter.io/ios/app/umer/id1630096984)

**Features:** Vision Pro support

**In-app purchases:** none


### 이에르로르

[App page](https://appshunter.io/ios/app/id6642692146)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UMER free?

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

### Is 이에르로르 free?

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

### Do UMER or 이에르로르 have ads?

Neither UMER nor 이에르로르 shows ads.

### Which is updated more often, UMER or 이에르로르?

UMER ships an update every 10 months, and 이에르로르 every 6 months. Most recently, UMER was updated on October 8, 2026 and 이에르로르 on October 18, 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.*