# Chemical Elements Learning vs 자연과학OX

The clearest difference is in-app purchases: Chemical Elements Learning at none against 자연과학OX's 3. 자연과학OX's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 자연과학OX sells 3 in-app purchases, starting at $2.99 per month. Chemical Elements Learning asks for nothing beyond the download.

Chemical Elements Learning ships an update every 3 months, 자연과학OX every 4 months. The most recent releases landed on September 22, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Chemical Elements Learning | 자연과학OX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/chemical-elements-learning/id1671402037/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | **Ad-supported** | Freemium |
| Size | 14 MB | 26 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) | [CHAE HYUCK LEE](https://appshunter.io/developer/1658701307) |

## What reviewers say

### Chemical Elements Learning

[App page](https://appshunter.io/ios/app/chemical-elements-learning/id1671402037)

Learn chemical element symbols and atomic numbers with interactive quizzes. Customize quiz settings for effective memorization. Ideal for science and chemistry test preparation.

**Highlights:** List of elements 1-118, Element symbol quiz, Customizable quiz settings, Memorization aid, Test preparation tool

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

**In-app purchases:** none


### 자연과학OX

[App page](https://appshunter.io/ios/app/ox/id6479007396)

This app offers practice quizzes for recent natural science topics, covering physics, chemistry, biology, and earth science. It provides subscription options for enhanced learning features and detailed explanations.

**Highlights:** Physics quizzes, Chemistry quizzes, Biology quizzes, Earth science quizzes, Subscription for explanations, Practice quizzes

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 단원 설정권 | $2.99 | per month |
| 무제한 해설권 | $3.99 | per month |
| 평생 자유 이용권 | $19.99 | one-time |


## Frequently asked questions

### Is Chemical Elements Learning free?

Chemical Elements Learning is free to download, with no in-app purchases.

### Is 자연과학OX free?

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

### Do Chemical Elements Learning or 자연과학OX have ads?

Chemical Elements Learning shows ads; 자연과학OX does not.

### Which is updated more often, Chemical Elements Learning or 자연과학OX?

Chemical Elements Learning ships an update every 3 months, and 자연과학OX every 4 months. Most recently, Chemical Elements Learning was updated on September 22, 2026 and 자연과학OX 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.*