# 산업안전OX vs 산안산기

The clearest difference is in-app purchases: 산안산기 at none against 산업안전OX's 3. 산업안전OX's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.1). On price and device support there is nothing between them.

Both are free to download. 산업안전OX sells 3 in-app purchases, starting at $2.99 per month. 산안산기 asks for nothing beyond the download.

## The numbers

| Metric | 산업안전OX | 산안산기 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | — | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 74 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CHAE HYUCK LEE](https://appshunter.io/developer/1658701307) | [dasong sim](https://appshunter.io/developer/1883683802) |

## 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 |


### 산안산기

[App page](https://appshunter.io/ios/app/id6790620473)

This app helps users prepare for the Industrial Safety Engineer exam. It focuses on personalized review using an AI-based algorithm to identify weak areas and schedule optimal review times. Features include practice tests, detailed explanations, and progress tracking.

**Highlights:** AI-powered smart review algorithm (FSRS), Comprehensive practice questions and detailed explanations, Personalized weak point analysis and targeted practice, Mock exams simulating real test conditions, Progress tracking and study statistics, Customizable study plans and daily goals, Offline study modes and device synchronization

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

**In-app purchases:** none


## Frequently asked questions

### Is 산업안전OX free?

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

### Is 산안산기 free?

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

### Do 산업안전OX or 산안산기 have ads?

산안산기 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.*