# 이택스북 vs 이씨오 범용뷰어 3.0

The clearest difference is iOS requirement: 이택스북 at 8.0 against 이씨오 범용뷰어 3.0's 15.0. On price, review sentiment, update cadence and ads there is nothing between them.

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

이택스북 ships an update every 3 months, 이씨오 범용뷰어 3.0 every 2 months. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 이택스북 | 이씨오 범용뷰어 3.0 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **10.0% of reviews** | 7.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 3 MB | 98 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BYOUNGSOOK KO](https://appshunter.io/developer/975991670) | [(주)이씨오](https://appshunter.io/developer/371073988) |

## What reviewers say

### 이택스북

[App page](https://appshunter.io/ios/app/id975991671)

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

**In-app purchases:** none


### 이씨오 범용뷰어 3.0

[App page](https://appshunter.io/ios/app/30/id6738065791)

This application allows users to read eBooks from ECO, Inc. Download and access your borrowed books anytime, anywhere. Essential for re-reading loaned digital content.

**Highlights:** Read eBooks, Download books, Access borrowed books, Anytime, anywhere access

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 이택스북 free?

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

### Is 이씨오 범용뷰어 3.0 free?

이씨오 범용뷰어 3.0 is free to download, with no in-app purchases.

### Do 이택스북 or 이씨오 범용뷰어 3.0 have ads?

Neither 이택스북 nor 이씨오 범용뷰어 3.0 shows ads.

### Which is updated more often, 이택스북 or 이씨오 범용뷰어 3.0?

이택스북 ships an update every 3 months, and 이씨오 범용뷰어 3.0 every 2 months. Most recently, 이택스북 was updated on October 14, 2026 and 이씨오 범용뷰어 3.0 on October 16, 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.*