# 가스, 위험물 자격증 기출문제 vs 산업안전기사

The clearest difference is review sentiment: 가스, 위험물 자격증 기출문제 at 100% against 산업안전기사's 0%. 가스, 위험물 자격증 기출문제 also leads on in-app purchases (none vs 1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. 산업안전기사 sells 1 one-off in-app purchase. 가스, 위험물 자격증 기출문제 asks for nothing beyond the download.

## The numbers

| Metric | 가스, 위험물 자격증 기출문제 | 산업안전기사 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 8 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 87 MB | 34 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Trutory Co., Ltd.](https://appshunter.io/developer/515679860) | [Qingdao Tomato Creative Technology Service Co., Ltd](https://appshunter.io/developer/1760477498) |

## What reviewers say

### 가스, 위험물 자격증 기출문제

[App page](https://appshunter.io/ios/app/id6633419384)

Prepare for gas and hazardous materials certification exams with practice questions. Study by subject or by exam session, track your progress, and review incorrect answers. Offers a subscription to remove ads and access full explanations.

**Highlights:** Subject-specific and session-based question viewing, Focused study mode for weak subjects, Progress tracking with average and subject scores, Resume unfinished exams, Automatic grading and incorrect answer notes, Bookmark important questions

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

**In-app purchases:** none


### 산업안전기사

[App page](https://appshunter.io/ios/app/cbt/id6741500736)

This app provides extensive past exam questions and detailed explanations to help users prepare for the Industrial Safety Engineer certification. It features intelligent error management, personalized favorites, and offline access for flexible learning. All core learning materials are available for free.

**Highlights:** 10 years of past exam questions, Scientific problem-solving by type, Detailed problem explanations, Intelligent incorrect answer management, Personalized favorites feature, Offline learning support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고 제거 | $3.99 | one-time |


## Frequently asked questions

### Is 가스, 위험물 자격증 기출문제 free?

가스, 위험물 자격증 기출문제 is free to download, with no in-app purchases.

### Is 산업안전기사 free?

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

### Do 가스, 위험물 자격증 기출문제 or 산업안전기사 have ads?

Both 가스, 위험물 자격증 기출문제 and 산업안전기사 show ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*