# 산업안전OX vs 산업안전기사

The clearest difference is ads: 산업안전OX at none against 산업안전기사's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 산업안전OX sells 3 in-app purchases, starting at $2.99 per month and 산업안전기사 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 산업안전OX | 산업안전기사 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 220 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CHAE HYUCK LEE](https://appshunter.io/developer/1658701307) | [Jongmin Kim](https://appshunter.io/developer/1693759760) |

## What reviewers say

### 산업안전OX

[App page](https://appshunter.io/ios/app/ox/id6738162182)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 무제한 해설권 | $2.99 | per month |
| 단원 설정권 | $2.99 | per month |
| 평생 자유 이용권 | $19.99 | one-time |


### 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 |


## Frequently asked questions

### Is 산업안전OX free?

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

### Is 산업안전기사 free?

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

### Do 산업안전OX or 산업안전기사 have ads?

산업안전기사 shows ads; 산업안전OX does not.

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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.*