# 산안기 vs 산업안전기사 필기·실기 문제풀이

The clearest difference is price: 산안기 at Free against 산업안전기사 필기·실기 문제풀이's $7.99. 산업안전기사 필기·실기 문제풀이's advantage is ads (none vs shown) and update cadence (every 10 days vs every 3 weeks). On in-app purchases, device support and iOS requirement there is nothing between them.

산안기 is free to download; 산업안전기사 필기·실기 문제풀이 costs $7.99 up front. 산안기 sells 3 in-app purchases, starting at $1.99 per month and 산업안전기사 필기·실기 문제풀이 sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

산안기 ships an update every 3 weeks, 산업안전기사 필기·실기 문제풀이 every 10 days. The most recent releases landed on October 18, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 산안기 | 산업안전기사 필기·실기 문제풀이 |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 91 MB | 35 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [dasong sim](https://appshunter.io/developer/1883683802) | [YOUNGJUN MA](https://appshunter.io/developer/1889888147) |

## What reviewers say

### 산안기

[App page](https://appshunter.io/ios/app/id6765879972)

This app focuses on effective review and understanding of concepts for the Industrial Safety Engineer exam. It uses an AI-powered algorithm to schedule personalized reviews, identifies your weaknesses, and provides detailed explanations and practice tests. Study efficiently even with limited time.

**Highlights:** AI-powered spaced repetition for optimal review, Concept-based learning with detailed explanations, Personalized weakness analysis and targeted practice, Full-range practice tests simulating the actual exam, Built-in scientific calculator, Offline study support, Progress tracking and study reports

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 프리미엄 월간 | $1.99 | per month |
| 프리미엄 3개월 | $3.99 | per 3 months |
| 프리미엄 평생 | $5.99 | one-time |


### 산업안전기사 필기·실기 문제풀이

[App page](https://appshunter.io/ios/app/id6797288640)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |


## Frequently asked questions

### Is 산안기 free?

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

### Is 산업안전기사 필기·실기 문제풀이 free?

산업안전기사 필기·실기 문제풀이 costs $7.99, and also offers in-app purchases.

### Do 산안기 or 산업안전기사 필기·실기 문제풀이 have ads?

산안기 shows ads; 산업안전기사 필기·실기 문제풀이 does not.

### Which is updated more often, 산안기 or 산업안전기사 필기·실기 문제풀이?

산안기 ships an update every 3 weeks, and 산업안전기사 필기·실기 문제풀이 every 10 days. Most recently, 산안기 was updated on October 18, 2026 and 산업안전기사 필기·실기 문제풀이 on October 29, 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.*