# 산업안전기사 vs 산업안전산업기사

The clearest difference is review sentiment: 산업안전산업기사 at 100% against 산업안전기사's 0%. 산업안전산업기사 also leads on in-app purchases (none vs 1). 산업안전기사's advantage is update cadence (every 8 days vs every 3 months). 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. 산업안전산업기사 asks for nothing beyond the download.

산업안전기사 ships an update every 8 days, 산업안전산업기사 every 3 months. The most recent releases landed on September 8, 2026 and August 13, 2026 respectively.

## The numbers

| Metric | 산업안전기사 | 산업안전산업기사 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 8 days** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 34 MB | 244 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qingdao Tomato Creative Technology Service Co., Ltd](https://appshunter.io/developer/1760477498) | [Jongmin Kim](https://appshunter.io/developer/1693759760) |

## What reviewers say

### 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 |


### 산업안전산업기사

[App page](https://appshunter.io/ios/app/id6741509717)

Prepare for the Industrial Safety Engineer certification exam with this comprehensive app. It offers practice tests, audio playback of questions, detailed explanations, and a learning notebook. Study offline anytime, anywhere.

**Highlights:** 15 sets of latest practice questions, Yearly and subject-based question sets, Audio playback for questions, Randomized question mode, Detailed explanations for all questions, Learning notebook and audio lectures, Automatic saving of incorrect answers, Favorite questions for review

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

**In-app purchases:** none


## Frequently asked questions

### Is 산업안전기사 free?

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

### Is 산업안전산업기사 free?

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

### Do 산업안전기사 or 산업안전산업기사 have ads?

Both 산업안전기사 and 산업안전산업기사 show ads.

### Which is updated more often, 산업안전기사 or 산업안전산업기사?

산업안전기사 ships an update every 8 days, and 산업안전산업기사 every 3 months. Most recently, 산업안전기사 was updated on September 8, 2026 and 산업안전산업기사 on August 13, 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.*