# Brainy Cards vs 자연과학OX

The clearest difference is update cadence: Brainy Cards at every 3 weeks against 자연과학OX's every 4 months. Brainy Cards also leads on iOS requirement (13.0 vs 15.0). 자연과학OX's advantage is review sentiment (100% vs 76%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Brainy Cards sells 7 in-app purchases, starting at $6.99 per month and 자연과학OX sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Brainy Cards ships an update every 3 weeks, 자연과학OX every 4 months. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Brainy Cards | 자연과학OX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 76.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 19 MB | 26 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BRAINYONE](https://appshunter.io/developer/1716249652) | [CHAE HYUCK LEE](https://appshunter.io/developer/1658701307) |

## What reviewers say

### Brainy Cards

[App page](https://appshunter.io/ios/app/brainy-cards/id6471918177)

This app uses neuroscience-based algorithms to enhance memory retention and learning efficiency. It helps users identify and focus on difficult material, provides a sense of achievement, and allows for personalized content creation and sharing. Study anytime, anywhere with this comprehensive learning tool.

**Highlights:** Neuroscience-based learning algorithm, AI-powered difficulty detection, Gamified learning with achievement tracking, Create and share custom study sets, Quick search and save functionality, Cross-device synchronization, Access to pre-made card decks

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro 1개월권 구매 | $6.99 | per month |
| Pro 6개월권(3일 무료체험) 구매 | $19.99 | per 6 months |
| Pro 6개월권 구매 | $19.99 | per 6 months |
| PRO 12개월권 구매 | $39.99 | per year |
| Pro 12개월권(3일 무료체험) 구매 | $39.99 | per year |
| 연속 학습일 불꽃 부활권 | $0.99 | one-time |
| Brainy Cards 프로회원 구매 | $89.99 | one-time |


### 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 Brainy Cards free?

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

### Is 자연과학OX free?

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

### Do Brainy Cards or 자연과학OX have ads?

Neither Brainy Cards nor 자연과학OX shows ads.

### Which is updated more often, Brainy Cards or 자연과학OX?

Brainy Cards ships an update every 3 weeks, and 자연과학OX every 4 months. Most recently, Brainy Cards was updated on October 14, 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.*