# 에피루스 전자책도서관 vs 고종훈 OX 문제집(한국사능력검정시험 대비)

The clearest difference is review sentiment: 고종훈 OX 문제집(한국사능력검정시험 대비) at 100% against 에피루스 전자책도서관's 4%. 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.

에피루스 전자책도서관 ships an update every 7 months, 고종훈 OX 문제집(한국사능력검정시험 대비) every 5 months. The most recent releases landed on September 27, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 에피루스 전자책도서관 | 고종훈 OX 문제집(한국사능력검정시험 대비) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (4 ratings)](https://appshunter.io/ios/app/1/id347246821/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 4.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | Free | Free |
| Size | 52 MB | 22 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Blue Mountain Soft Inc.](https://appshunter.io/developer/347246824) | [NewLearn Soft](https://appshunter.io/developer/1815216881) |

## 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


### 고종훈 OX 문제집(한국사능력검정시험 대비)

[App page](https://appshunter.io/ios/app/ox/id6474063482)

This app helps you prepare for the Korean History Proficiency Test with structured learning plans and practice quizzes. It offers personalized notes for incorrect answers and allows for convenient mobile access anytime, anywhere. Expert-created questions ensure high-quality practice for exam success.

**Highlights:** Structured learning plans, Practice quizzes, Personalized incorrect answer notes, Mobile access, Expert-created questions, Exam preparation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 에피루스 전자책도서관 free?

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

### Is 고종훈 OX 문제집(한국사능력검정시험 대비) free?

고종훈 OX 문제집(한국사능력검정시험 대비) is free to download, with no in-app purchases.

### Do 에피루스 전자책도서관 or 고종훈 OX 문제집(한국사능력검정시험 대비) have ads?

Neither 에피루스 전자책도서관 nor 고종훈 OX 문제집(한국사능력검정시험 대비) shows ads.

### Which is updated more often, 에피루스 전자책도서관 or 고종훈 OX 문제집(한국사능력검정시험 대비)?

에피루스 전자책도서관 ships an update every 7 months, and 고종훈 OX 문제집(한국사능력검정시험 대비) every 5 months. Most recently, 에피루스 전자책도서관 was updated on September 27, 2026 and 고종훈 OX 문제집(한국사능력검정시험 대비) on September 23, 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.*