# AIで学ぶ大学受験英語 vs CoTan

The clearest difference is in-app purchases: CoTan at none against AIで学ぶ大学受験英語's 1. CoTan also leads on update cadence (every 3 days vs every 10 days). AIで学ぶ大学受験英語's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AIで学ぶ大学受験英語 sells 1 in-app purchase, starting at $0.49 per month. CoTan asks for nothing beyond the download.

AIで学ぶ大学受験英語 ships an update every 10 days, CoTan every 3 days. The most recent releases landed on September 10, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | AIで学ぶ大学受験英語 | CoTan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 3 days** |
| Size | 88 MB | 28 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tsuyoshi Hayakawa](https://appshunter.io/developer/314516929) | [Ryo Minebayashi](https://appshunter.io/developer/1854415357) |

## What reviewers say

### AIで学ぶ大学受験英語

[App page](https://appshunter.io/ios/app/ai/id6751457527)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 定期購読（１ヶ月） | $0.49 | per month |


### CoTan

[App page](https://appshunter.io/ios/app/cotan/id6755531559)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AIで学ぶ大学受験英語 free?

AIで学ぶ大学受験英語 is free to download, with in-app purchases available.

### Is CoTan free?

CoTan is free to download, with no in-app purchases.

### Do AIで学ぶ大学受験英語 or CoTan have ads?

CoTan shows ads; AIで学ぶ大学受験英語 does not.

### Which is updated more often, AIで学ぶ大学受験英語 or CoTan?

AIで学ぶ大学受験英語 ships an update every 10 days, and CoTan every 3 days. Most recently, AIで学ぶ大学受験英語 was updated on September 10, 2026 and CoTan on September 26, 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.*