# 산업안전산업기사 vs 산안산기

The clearest difference is review sentiment: 산안산기 at 50% against 산업안전산업기사's 0%. 산안산기 also leads on in-app purchases (none vs 1). 산업안전산업기사's advantage is iOS requirement (12.0 vs 15.1). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. 산업안전산업기사 sells 1 one-off in-app purchase. 산안산기 asks for nothing beyond the download.

산업안전산업기사 ships an update every 2 weeks, 산안산기 monthly. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 산업안전산업기사 | 산안산기 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 42 MB | 74 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qingdao Tomato Creative Technology Service Co., Ltd](https://appshunter.io/developer/1760477498) | [dasong sim](https://appshunter.io/developer/1883683802) |

## What reviewers say

### 산업안전산업기사

[App page](https://appshunter.io/ios/app/cbt/id6742121484)

This app provides 10 years of past exam questions and detailed explanations to help you prepare for the Industrial Safety Engineer certification. It features intelligent error management and personalized favorites to reinforce learning and avoid repeated mistakes.

**Highlights:** 10 years of past exam questions, Scientific problem-solving by type, Detailed explanations for all questions, Intelligent incorrect answer management, Personalized favorites function, Completely free to use

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 고급 기능 | $3.99 | 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 산업안전산업기사 free?

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

### Is 산안산기 free?

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

### Do 산업안전산업기사 or 산안산기 have ads?

Both 산업안전산업기사 and 산안산기 show ads.

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

산업안전산업기사 ships an update every 2 weeks, and 산안산기 monthly. Most recently, 산업안전산업기사 was updated on October 10, 2026 and 산안산기 on October 24, 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.*