# 산재법OX vs PDF Grade Connect

The clearest difference is in-app purchases: PDF Grade Connect at none against 산재법OX's 2. 산재법OX's advantage is ads (none vs shown) and iOS requirement (15.0 vs 26.1). On price, update cadence 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. PDF Grade Connect asks for nothing beyond the download.

산재법OX ships an update every 2 months, PDF Grade Connect every 3 months. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 산재법OX | PDF Grade Connect |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 4 MB |
| Requires iOS | **15.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHAE HYUCK LEE](https://appshunter.io/developer/1658701307) | [Hyeonchan Yu](https://appshunter.io/developer/1857516231) |

## What reviewers say

### 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 |


### PDF Grade Connect

[App page](https://appshunter.io/ios/app/pdf-grade-connect/id6758963936)

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

**In-app purchases:** none


## Frequently asked questions

### Is 산재법OX free?

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

### Is PDF Grade Connect free?

PDF Grade Connect is free to download, with no in-app purchases.

### Do 산재법OX or PDF Grade Connect have ads?

PDF Grade Connect shows ads; 산재법OX does not.

### Which is updated more often, 산재법OX or PDF Grade Connect?

산재법OX ships an update every 2 months, and PDF Grade Connect every 3 months. Most recently, 산재법OX was updated on October 5, 2026 and PDF Grade Connect on October 8, 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.*