# 유한대학교 도서관 vs 산업안전산업기사

The clearest difference is in-app purchases: 유한대학교 도서관 at none against 산업안전산업기사's 1. 유한대학교 도서관 also leads on ads (none vs shown). 산업안전산업기사's advantage is update cadence (every 2 weeks vs every 2 months) and iOS requirement (12.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. 산업안전산업기사 sells 1 one-off in-app purchase. 유한대학교 도서관 asks for nothing beyond the download.

유한대학교 도서관 ships an update every 2 months, 산업안전산업기사 every 2 weeks. The most recent releases landed on September 28, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 유한대학교 도서관 | 산업안전산업기사 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 20 MB | 42 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [LibTech Co.](https://appshunter.io/developer/1099043485) | [Qingdao Tomato Creative Technology Service Co., Ltd](https://appshunter.io/developer/1760477498) |

## What reviewers say

### 유한대학교 도서관

[App page](https://appshunter.io/ios/app/id6476642068)

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

**In-app purchases:** none


### 산업안전산업기사

[App page](https://appshunter.io/ios/app/cbt/id6742121484)

This app provides 10 years of past exam questions and detailed explanations to help you prepare for the Industrial Safety Engineer certification. It features intelligent error management and personalized favorites to reinforce learning and avoid repeated mistakes.

**Highlights:** 10 years of past exam questions, Scientific problem-solving by type, Detailed explanations for all questions, Intelligent incorrect answer management, Personalized favorites function, Completely free to use

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 고급 기능 | $3.99 | one-time |


## Frequently asked questions

### Is 유한대학교 도서관 free?

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

### Is 산업안전산업기사 free?

산업안전산업기사 is free to download, with in-app purchases available.

### Do 유한대학교 도서관 or 산업안전산업기사 have ads?

산업안전산업기사 shows ads; 유한대학교 도서관 does not.

### Which is updated more often, 유한대학교 도서관 or 산업안전산업기사?

유한대학교 도서관 ships an update every 2 months, and 산업안전산업기사 every 2 weeks. Most recently, 유한대학교 도서관 was updated on September 28, 2026 and 산업안전산업기사 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.*