# 산업안전기사 vs 산업안전기사

The clearest difference is review sentiment: 산업안전기사 at 67% against 산업안전기사's 0%. 산업안전기사's advantage is update cadence (every 8 days vs every 3 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 산업안전기사 sells 3 one-off in-app purchases and 산업안전기사 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

산업안전기사 ships an update every 3 weeks, 산업안전기사 every 8 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 산업안전기사 | 산업안전기사 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 220 MB | 34 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jongmin Kim](https://appshunter.io/developer/1693759760) | [Qingdao Tomato Creative Technology Service Co., Ltd](https://appshunter.io/developer/1760477498) |

## What reviewers say

### 산업안전기사

[App page](https://appshunter.io/ios/app/id6740614771)

Prepare for the Industrial Safety Engineer exam with this comprehensive app. It offers 20 sets of the latest past exam questions, detailed explanations, and a smart mistake notebook to review incorrect answers. Study anytime, anywhere, even offline, with audio playback for questions and core lectures.

**Highlights:** 20 sets of latest past exam questions, Yearly and subject-specific question sets, Detailed explanations for all questions, Automatic saving of incorrect answers, Favorite questions for review, Audio playback for questions, Offline access

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고 제거 | $0.99 | one-time |
| 광고 제거 | $4.99 | one-time |
| 후원 하기 | $5.99 | one-time |


### 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 산업안전기사 free?

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

### Is 산업안전기사 free?

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

### Do 산업안전기사 or 산업안전기사 have ads?

Both 산업안전기사 and 산업안전기사 show ads.

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

산업안전기사 ships an update every 3 weeks, and 산업안전기사 every 8 days. Most recently, 산업안전기사 was updated on October 24, 2026 and 산업안전기사 on October 10, 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.*