# 고대인클래스 vs 산재법OX

The clearest difference is review sentiment: 산재법OX at 50% against 고대인클래스's 6%. 고대인클래스's advantage is in-app purchases (none vs 2) and iOS requirement (10.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 산재법OX sells 2 in-app purchases, starting at $2.99 per month. 고대인클래스 asks for nothing beyond the download.

고대인클래스 ships an update monthly, 산재법OX every 2 months. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 고대인클래스 | 산재법OX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 6.4% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 23 MB | 26 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kounosoft.,Co Ltd](https://appshunter.io/developer/434800474) | [CHAE HYUCK LEE](https://appshunter.io/developer/1658701307) |

## What reviewers say

### 고대인클래스

[App page](https://appshunter.io/ios/app/id1111838067)

**In-app purchases:** none

**What reviewers like**

- 👍 Easy attendance check
- 👍 Clean attendance process

**What reviewers complain about**

- 🐛 App not opening
- 🐛 Blank white screen
- 🐛 Login errors
- 🐛 Security vulnerability (plaintext password)
- 🐛 App crashes frequently

**Reported bugs**

- App does not open
- App shows only a white screen
- Login credentials are not accepted
- App transfers passwords in plaintext
- App crashes or freezes

**Requested features**

- Improve app stability and reliability
- Fix blank screen issue
- Resolve login problems
- Update the app regularly
- Make location services optional or usable only when the app is in use


### 산재법OX

[App page](https://appshunter.io/ios/app/ox/id1658701035)

Learn recent industrial property law exam questions through repetitive OX quizzes. This educational platform offers effective study methods for patent, trademark, and design protection laws. Subscription options unlock full features and content.

**Highlights:** Repetitive OX quiz learning, Covers patent law, Covers trademark law, Covers design protection law, Subscription options available, Free trial periods

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 단원 설정권 | $2.99 | per month |
| 무제한 설정권 | $3.99 | per month |


## Frequently asked questions

### Is 고대인클래스 free?

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

### Is 산재법OX free?

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

### Do 고대인클래스 or 산재법OX have ads?

Neither 고대인클래스 nor 산재법OX shows ads.

### Which is updated more often, 고대인클래스 or 산재법OX?

고대인클래스 ships an update monthly, and 산재법OX every 2 months. Most recently, 고대인클래스 was updated on October 24, 2026 and 산재법OX on October 5, 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.*