# 丸単 vs KyouStudy

The clearest difference is ads: 丸単 at none against KyouStudy's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. 丸単 sells 10 one-off in-app purchases and KyouStudy sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

丸単 ships an update every 4 days, KyouStudy every 6 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 丸単 | KyouStudy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 6 days |
| Size | 7 MB | 187 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [sungjae park](https://appshunter.io/developer/1896477219) | [HungBok](https://appshunter.io/developer/6787647770) |

## What reviewers say

### 丸単

[App page](https://appshunter.io/ios/app/id6767459920)

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TOPIK Upgrade 3 | $0.49 | one-time |
| TOPIK Upgrade 4 | $0.49 | one-time |
| All Upgrade Mixed | $0.49 | one-time |
| All Upgrade 4 TOPIK | $0.99 | one-time |
| TOPIK Upgrade 2 | $1.99 | one-time |
| All Upgrade 3 TOPIK | $1.99 | one-time |
| All Upgrade TOPIK | $1.99 | one-time |
| All Upgrade HANKEN | $1.99 | one-time |
| All Upgrade 2 TOPIK | $3.99 | one-time |
| All Upgrade 1 TOPIK | $4.99 | one-time |


### KyouStudy

[App page](https://appshunter.io/ios/app/kyoustudy-language-learning/id6799300233)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KyouStudy Premium | $3.99 | per month |
| KyouStudy Premium (Annual) | $39.99 | per year |
| KyouStudy Premium (Lifetime) | $99.99 | one-time |


## Frequently asked questions

### Is 丸単 free?

丸単 is free to download, with in-app purchases available.

### Is KyouStudy free?

KyouStudy is free to download, with in-app purchases available.

### Do 丸単 or KyouStudy have ads?

KyouStudy shows ads; 丸単 does not.

### Which is updated more often, 丸単 or KyouStudy?

丸単 ships an update every 4 days, and KyouStudy every 6 days. Most recently, 丸単 was updated on October 24, 2026 and KyouStudy on October 25, 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.*