# 산업안전기사 vs 떠먹

The clearest difference is in-app purchases: 떠먹 at none against 산업안전기사's 1. 떠먹 also leads on ads (none vs shown). 산업안전기사's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

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

산업안전기사 ships an update every 8 days, 떠먹 every 9 days. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 산업안전기사 | 떠먹 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 46 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qingdao Tomato Creative Technology Service Co., Ltd](https://appshunter.io/developer/1760477498) | [HONG IK LEE](https://appshunter.io/developer/1819512861) |

## What reviewers say

### 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 |


### 떠먹

[App page](https://appshunter.io/ios/app/id6766482217)

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

**In-app purchases:** none


## Frequently asked questions

### Is 산업안전기사 free?

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

### Is 떠먹 free?

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

### Do 산업안전기사 or 떠먹 have ads?

산업안전기사 shows ads; 떠먹 does not.

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

산업안전기사 ships an update every 8 days, and 떠먹 every 9 days. Most recently, 산업안전기사 was updated on October 10, 2026 and 떠먹 on October 25, 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.*