# 산업안전산업기사 vs 떠먹

The clearest difference is in-app purchases: 떠먹 at none against 산업안전산업기사's 1. 떠먹 also leads on ads (none vs shown). 산업안전산업기사's advantage is update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.

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

산업안전산업기사 ships an update every 2 weeks, 떠먹 every 5 weeks. The most recent releases landed on September 23, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | 산업안전산업기사 | 떠먹 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 42 MB | 46 MB |
| Requires iOS | **12.0** | 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

### 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 |


### 떠먹

[App page](https://appshunter.io/ios/app/id6773045404)

**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 떠먹 free?

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

### Do 산업안전산업기사 or 떠먹 have ads?

산업안전산업기사 shows ads; 떠먹 does not.

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

산업안전산업기사 ships an update every 2 weeks, and 떠먹 every 5 weeks. Most recently, 산업안전산업기사 was updated on September 23, 2026 and 떠먹 on September 16, 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.*