# 大学入試古文単語特訓帳 vs Debt Clock

The clearest difference is update cadence: Debt Clock at every 2 days against 大学入試古文単語特訓帳's every 2 months. Debt Clock also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 大学入試古文単語特訓帳 sells 2 one-off in-app purchases and Debt Clock sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

大学入試古文単語特訓帳 ships an update every 2 months, Debt Clock every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | 大学入試古文単語特訓帳 | Debt Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 13 MB | 25 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Keiko Yukawa](https://appshunter.io/developer/719596665) | [Kanta Osumi](https://appshunter.io/developer/1872595837) |

## What reviewers say

### 大学入試古文単語特訓帳

[App page](https://appshunter.io/ios/app/330/id6746745018)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告表示削除 | $1.99 | one-time |
| 単語帳作成数無制限 | $1.99 | one-time |


### Debt Clock

[App page](https://appshunter.io/ios/app/debt-clock/id6758671250)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン（月額） | $1.99 | per month |
| プレミアムプラン（年額） | $14.99 | per year |


## Frequently asked questions

### Is 大学入試古文単語特訓帳 free?

大学入試古文単語特訓帳 is free to download, with in-app purchases available.

### Is Debt Clock free?

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

### Do 大学入試古文単語特訓帳 or Debt Clock have ads?

Both 大学入試古文単語特訓帳 and Debt Clock show ads.

### Which is updated more often, 大学入試古文単語特訓帳 or Debt Clock?

大学入試古文単語特訓帳 ships an update every 2 months, and Debt Clock every 2 days. Most recently, 大学入試古文単語特訓帳 was updated on October 25, 2026 and Debt Clock 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.*