# 산업안전기사 vs Study Planner for High

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

Both are free to download. 산업안전기사 sells 1 one-off in-app purchase and Study Planner for High sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

산업안전기사 ships an update every 8 days, Study Planner for High every 2 weeks. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 산업안전기사 | Study Planner for High |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 27 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Qingdao Tomato Creative Technology Service Co., Ltd](https://appshunter.io/developer/1760477498) | [HyunJu Kim](https://appshunter.io/developer/6780143762) |

## 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 |


### Study Planner for High

[App page](https://appshunter.io/ios/app/study-planner-for-high-school/id6780143760)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Plus 월간 멤버십 | $1.99 | per month |


## Frequently asked questions

### Is 산업안전기사 free?

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

### Is Study Planner for High free?

Study Planner for High is free to download, with in-app purchases available.

### Do 산업안전기사 or Study Planner for High have ads?

산업안전기사 shows ads; Study Planner for High does not.

### Which is updated more often, 산업안전기사 or Study Planner for High?

산업안전기사 ships an update every 8 days, and Study Planner for High every 2 weeks. Most recently, 산업안전기사 was updated on September 23, 2026 and Study Planner for High on September 17, 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.*