# 스터디채널 vs 산업안전기사

The clearest difference is in-app purchases: 스터디채널 at none against 산업안전기사's 1. 스터디채널 also leads on ads (none vs shown) and review sentiment (23% vs 0%). 산업안전기사's advantage is update cadence (every 8 days vs every 2 months). On price and device support there is nothing between them.

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

스터디채널 ships an update every 2 months, 산업안전기사 every 8 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 스터디채널 | 산업안전기사 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **23.1% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 34 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Studychannel Corp](https://appshunter.io/developer/1314109166) | [Qingdao Tomato Creative Technology Service Co., Ltd](https://appshunter.io/developer/1760477498) |

## What reviewers say

### 스터디채널

[App page](https://appshunter.io/ios/app/id1314109167)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 스터디채널 free?

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

### Is 산업안전기사 free?

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

### Do 스터디채널 or 산업안전기사 have ads?

산업안전기사 shows ads; 스터디채널 does not.

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

스터디채널 ships an update every 2 months, and 산업안전기사 every 8 days. Most recently, 스터디채널 was updated on October 24, 2026 and 산업안전기사 on October 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*