# 英検®英作文 AI添削 Yoshi vs Study Coin (4174d1)

The clearest difference is in-app purchases: Study Coin (4174d1) at none against 英検®英作文 AI添削 Yoshi's 1. Study Coin (4174d1) also leads on update cadence (fortnightly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 英検®英作文 AI添削 Yoshi sells 1 in-app purchase, starting at $7.99 per month. Study Coin (4174d1) asks for nothing beyond the download.

英検®英作文 AI添削 Yoshi ships an update every 4 months, Study Coin (4174d1) fortnightly. The most recent releases landed on October 28, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 英検®英作文 AI添削 Yoshi | Study Coin (4174d1) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Size | 4 MB | 110 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yoshitaka Matsumoto](https://appshunter.io/developer/1799729892) | [Shotaro Hamada](https://appshunter.io/developer/6790985477) |

## What reviewers say

### 英検®英作文 AI添削 Yoshi

[App page](https://appshunter.io/ios/app/ai-yoshi/id6742748653)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムサービス | $7.99 | per month |


### Study Coin (4174d1)

[App page](https://appshunter.io/ios/app/study-coin-4174d1/id6790985475)

**In-app purchases:** none


## Frequently asked questions

### Is 英検®英作文 AI添削 Yoshi free?

英検®英作文 AI添削 Yoshi is free to download, with in-app purchases available.

### Is Study Coin (4174d1) free?

Study Coin (4174d1) is free to download, with no in-app purchases.

### Do 英検®英作文 AI添削 Yoshi or Study Coin (4174d1) have ads?

Neither 英検®英作文 AI添削 Yoshi nor Study Coin (4174d1) shows ads.

### Which is updated more often, 英検®英作文 AI添削 Yoshi or Study Coin (4174d1)?

英検®英作文 AI添削 Yoshi ships an update every 4 months, and Study Coin (4174d1) fortnightly. Most recently, 英検®英作文 AI添削 Yoshi was updated on October 28, 2026 and Study Coin (4174d1) on October 21, 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.*