# 参考書de英語脳 vs 大学受験、数学、問題 ー 自信がつく数学(国公立医学部)

The clearest difference is in-app purchases: 大学受験、数学、問題 ー 自信がつく数学(国公立医学部) at none against 参考書de英語脳's 4. 参考書de英語脳's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 8 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 参考書de英語脳 sells 4 one-off in-app purchases. 大学受験、数学、問題 ー 自信がつく数学(国公立医学部) asks for nothing beyond the download.

参考書de英語脳 ships an update every 3 weeks, 大学受験、数学、問題 ー 自信がつく数学(国公立医学部) every 8 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 参考書de英語脳 | 大学受験、数学、問題 ー 自信がつく数学(国公立医学部) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 8 months |
| Size | 27 MB | 73 MB |
| Requires iOS | 13.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seiji Mukai](https://appshunter.io/developer/1228461062) | [Kenichi Fujii](https://appshunter.io/developer/1725932598) |

## What reviewers say

### 参考書de英語脳

[App page](https://appshunter.io/ios/app/de/id1228461063)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30日間利用権 | $0.99 | one-time |
| 90日間利用権 | $2.99 | one-time |
| 180日間利用権 | $5.99 | one-time |
| 365日間利用権 | $11.99 | one-time |


### 大学受験、数学、問題 ー 自信がつく数学(国公立医学部)

[App page](https://appshunter.io/ios/app/id6670412503)

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

**In-app purchases:** none


## Frequently asked questions

### Is 参考書de英語脳 free?

参考書de英語脳 is free to download, with in-app purchases available.

### Is 大学受験、数学、問題 ー 自信がつく数学(国公立医学部) free?

大学受験、数学、問題 ー 自信がつく数学(国公立医学部) is free to download, with no in-app purchases.

### Do 参考書de英語脳 or 大学受験、数学、問題 ー 自信がつく数学(国公立医学部) have ads?

大学受験、数学、問題 ー 自信がつく数学(国公立医学部) shows ads; 参考書de英語脳 does not.

### Which is updated more often, 参考書de英語脳 or 大学受験、数学、問題 ー 自信がつく数学(国公立医学部)?

参考書de英語脳 ships an update every 3 weeks, and 大学受験、数学、問題 ー 自信がつく数学(国公立医学部) every 8 months. Most recently, 参考書de英語脳 was updated on October 26, 2026 and 大学受験、数学、問題 ー 自信がつく数学(国公立医学部) on October 30, 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.*