# マスタン英単語 vs Eigo.io | English School

The clearest difference is update cadence: Eigo.io | English School at every 2 days against マスタン英単語's every 2 weeks. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. マスタン英単語 sells 2 in-app purchases, starting at $4.99 per month and Eigo.io | English School sells 4 in-app purchases, starting at $59.99 per month. Whichever you choose, the download price is not the number that matters.

マスタン英単語 ships an update every 2 weeks, Eigo.io | English School every 2 days. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | マスタン英単語 | Eigo.io | English School |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 35 MB | 89 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Norihiro Sakamoto](https://appshunter.io/developer/1885026853) | [Connor Finley](https://appshunter.io/developer/1891138647) |

## What reviewers say

### マスタン英単語

[App page](https://appshunter.io/ios/app/toeic/id6760566858)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro １ヶ月プラン | $4.99 | per month |
| Pro 年間プラン | $34.99 | per year |


### Eigo.io | English School

[App page](https://appshunter.io/ios/app/eigoio-english-school/id6761731252)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lite Plan (Monthly) | $59.99 | per month |
| Standard Plan (Monthly) | $119.99 | per month |
| Lite Plan (Yearly) | $699.99 | per year |
| Standard Plan (Yearly) | $999.99 | per year |


## Frequently asked questions

### Is マスタン英単語 free?

マスタン英単語 is free to download, with in-app purchases available.

### Is Eigo.io | English School free?

Eigo.io | English School is free to download, with in-app purchases available.

### Which is updated more often, マスタン英単語 or Eigo.io | English School?

マスタン英単語 ships an update every 2 weeks, and Eigo.io | English School every 2 days. Most recently, マスタン英単語 was updated on October 13, 2026 and Eigo.io | English School on October 3, 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.*