# 에피루스 전자책도서관 vs 웅진OPMS 전자책뷰어

The clearest difference is update cadence: 웅진OPMS 전자책뷰어 at every 2 months against 에피루스 전자책도서관's every 7 months. 웅진OPMS 전자책뷰어 also leads on iOS requirement (9.0 vs 15.6). 에피루스 전자책도서관's advantage is ratings volume (4 vs 1). On price, rating, review sentiment 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.

On the App Store both sit at effectively the same score — 1.0 for 에피루스 전자책도서관 against 1.0 for 웅진OPMS 전자책뷰어. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews are what separate them: 4% of 에피루스 전자책도서관's written reviews are positive against 0% of 웅진OPMS 전자책뷰어's.

에피루스 전자책도서관 ships an update every 7 months, 웅진OPMS 전자책뷰어 every 2 months. The most recent releases landed on October 1, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 에피루스 전자책도서관 | 웅진OPMS 전자책뷰어 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (4 ratings)](https://appshunter.io/ios/app/1/id347246821/reviews) | [1.0 (1 ratings)](https://appshunter.io/ios/app/opms/id1201769721/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | **4.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 52 MB | 61 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Blue Mountain Soft Inc.](https://appshunter.io/developer/347246824) | [OPMS Co., LTD.](https://appshunter.io/developer/408810462) |

## What reviewers say

### 에피루스 전자책도서관

[App page](https://appshunter.io/ios/app/1/id347246821)

Access and read a wide range of e-books from hundreds of public and university libraries. Borrow, return, and enjoy digital books conveniently on your iOS device.

**Highlights:** Unified e-book service, Access public and university libraries, Borrow and return e-books, Read anytime, anywhere, Supports XDF and Epyrus Xbook formats, Reflowable text for comfortable reading

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

**In-app purchases:** none


### 웅진OPMS 전자책뷰어

[App page](https://appshunter.io/ios/app/opms/id1201769721)

Access and read a wide selection of e-books from the OPMS mall directly on your device. Organize your library, search content quickly, and customize your reading experience with bookmarks, highlights, and adjustable text settings for optimal readability.

**Highlights:** Organized digital library, Fast text search, Bookmark and highlight functionality, Customizable background and font size, Optimized readability across devices

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

**In-app purchases:** none


## Frequently asked questions

### Is 에피루스 전자책도서관 free?

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

### Is 웅진OPMS 전자책뷰어 free?

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

### Which has better reviews, 에피루스 전자책도서관 or 웅진OPMS 전자책뷰어?

에피루스 전자책도서관 and 웅진OPMS 전자책뷰어 are both rated 1.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do 에피루스 전자책도서관 or 웅진OPMS 전자책뷰어 have ads?

Neither 에피루스 전자책도서관 nor 웅진OPMS 전자책뷰어 shows ads.

### Which is updated more often, 에피루스 전자책도서관 or 웅진OPMS 전자책뷰어?

에피루스 전자책도서관 ships an update every 7 months, and 웅진OPMS 전자책뷰어 every 2 months. Most recently, 에피루스 전자책도서관 was updated on October 1, 2026 and 웅진OPMS 전자책뷰어 on September 22, 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.*