# Yoki vs マスタン英単語

The clearest difference is in-app purchases: Yoki at none against マスタン英単語's 2. Yoki also leads on device support and iOS requirement (15.6 vs 17.0). On price and update cadence 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. Yoki asks for nothing beyond the download.

Yoki ships an update every 9 days, マスタン英単語 every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Yoki | マスタン英単語 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/toeic/id6760566858/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | — |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | — | Freemium |
| Size | 28 MB | 35 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Hidenori Ishiii](https://appshunter.io/developer/1440959870) | [Norihiro Sakamoto](https://appshunter.io/developer/1885026853) |

## What reviewers say

### Yoki

[App page](https://appshunter.io/ios/app/yoki-kana/id6751323760)

**Features:** macOS Compatibility

**In-app purchases:** none


### マスタン英単語

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

This app offers a comprehensive vocabulary builder with 15,000 words from beginner to native levels, categorized by difficulty. It includes a quick vocabulary test to determine your level and offers various learning methods like flashcards and quizzes. Pro plans unlock unlimited learning and features with a free trial.

**Highlights:** 15,000 words by difficulty, Vocabulary level assessment, Illustrations and example sentences, Multiple learning styles (flashcards, quizzes, typing), Spaced repetition system, Progress visualization

**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 |


## Frequently asked questions

### Is Yoki free?

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

### 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.

### Which is updated more often, Yoki or マスタン英単語?

Yoki ships an update every 9 days, and マスタン英単語 every 2 weeks. Most recently, Yoki was updated on October 30, 2026 and マスタン英単語 on October 31, 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.*