# 자연과학OX vs Study Planner Pro

The clearest difference is update cadence: Study Planner Pro at every 9 days against 자연과학OX's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 자연과학OX sells 3 in-app purchases, starting at $2.99 per month and Study Planner Pro sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

자연과학OX ships an update every 4 months, Study Planner Pro every 9 days. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 자연과학OX | Study Planner Pro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Freemium | — |
| Size | 26 MB | 20 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [CHAE HYUCK LEE](https://appshunter.io/developer/1658701307) | [HyunJu Kim](https://appshunter.io/developer/6780143762) |

## What reviewers say

### 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 |


### Study Planner Pro

[App page](https://appshunter.io/ios/app/study-planner-pro/id6786996270)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Planner Pro - AI 플러스 멤버쉽 | $2.99 | per month |


## Frequently asked questions

### Is 자연과학OX free?

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

### Is Study Planner Pro free?

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

### Do 자연과학OX or Study Planner Pro have ads?

Neither 자연과학OX nor Study Planner Pro shows ads.

### Which is updated more often, 자연과학OX or Study Planner Pro?

자연과학OX ships an update every 4 months, and Study Planner Pro every 9 days. Most recently, 자연과학OX was updated on September 23, 2026 and Study Planner Pro 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.*