# マスタン英単語 vs 赤シート英単語アプリ/英単語/英文法/英熟語

The clearest difference is device support: 赤シート英単語アプリ/英単語/英文法/英熟語 at 2 against マスタン英単語's —. On price, update cadence, 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 赤シート英単語アプリ/英単語/英文法/英熟語 sells 3 in-app purchases, starting at $17.99 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, 赤シート英単語アプリ/英単語/英文法/英熟語 fortnightly. The most recent releases landed on September 27, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | マスタン英単語 | 赤シート英単語アプリ/英単語/英文法/英熟語 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | — | Freemium |
| Size | 35 MB | 9 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Norihiro Sakamoto](https://appshunter.io/developer/1885026853) | [Kazuki Kusafuka](https://appshunter.io/developer/1896678535) |

## 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 |


### 赤シート英単語アプリ/英単語/英文法/英熟語

[App page](https://appshunter.io/ios/app/id6769674680)

Learn English vocabulary, idioms, and grammar efficiently with a red sheet-style memorization mode. Choose courses for TOEIC, Eiken, exams, or daily conversation. Features include quizzes, custom word lists, and learning progress management.

**Highlights:** English vocabulary, idiom, and grammar learning, Red sheet-style memorization mode, Quiz-based learning, Custom word list creation, Learning progress tracking, Create word lists from photos

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月額プレミアムプラン | $17.99 | per month |
| 3か月プレミアムプラン | $39.99 | per 3 months |
| 年額プレミアムプラン | $119.99 | 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 赤シート英単語アプリ/英単語/英文法/英熟語 free?

赤シート英単語アプリ/英単語/英文法/英熟語 is free to download, with in-app purchases available.

### Which is updated more often, マスタン英単語 or 赤シート英単語アプリ/英単語/英文法/英熟語?

マスタン英単語 ships an update every 2 weeks, and 赤シート英単語アプリ/英単語/英文法/英熟語 fortnightly. Most recently, マスタン英単語 was updated on September 27, 2026 and 赤シート英単語アプリ/英単語/英文法/英熟語 on September 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*