# こくご vs Study Clock Timer

The clearest difference is ads: Study Clock Timer at none against こくご's shown. Study Clock Timer also leads on update cadence (every 3 days vs every 123 months). こくご's advantage is iOS requirement (13.4 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. こくご sells 1 one-off in-app purchase and Study Clock Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

こくご ships an update every 123 months, Study Clock Timer every 3 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | こくご | Study Clock Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 123 months | **Every 3 days** |
| Size | 783 MB | 5 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [国伟 林](https://appshunter.io/developer/767370833) | [Tatsuya Kawasaki](https://appshunter.io/developer/562479077) |

## What reviewers say

### こくご

[App page](https://appshunter.io/ios/app/id1071335066)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を非表示 | $21.99 | one-time |


### Study Clock Timer

[App page](https://appshunter.io/ios/app/study-clock-timer/id6780480380)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a drink | $2.99 | one-time |


## Frequently asked questions

### Is こくご free?

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

### Is Study Clock Timer free?

Study Clock Timer is free to download, with in-app purchases available.

### Do こくご or Study Clock Timer have ads?

こくご shows ads; Study Clock Timer does not.

### Which is updated more often, こくご or Study Clock Timer?

こくご ships an update every 123 months, and Study Clock Timer every 3 days. Most recently, こくご was updated on October 26, 2026 and Study Clock Timer 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.*