# DB合格ドリル vs 統計学トレーナー

The clearest difference is in-app purchases: DB合格ドリル at none against 統計学トレーナー's 10. DB合格ドリル also leads on iOS requirement (15.1 vs 17.0). 統計学トレーナー's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. 統計学トレーナー sells 10 one-off in-app purchases. DB合格ドリル asks for nothing beyond the download.

DB合格ドリル ships an update every 6 days, 統計学トレーナー every 3 days. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | DB合格ドリル | 統計学トレーナー |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 days | **Every 3 days** |
| Size | 52 MB | 9 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AFTW LLC](https://appshunter.io/developer/1886356149) | [KEISUKE MASUDA](https://appshunter.io/developer/6799662296) |

## What reviewers say

### DB合格ドリル

[App page](https://appshunter.io/ios/app/db/id6761160543)

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

**In-app purchases:** none


### 統計学トレーナー

[App page](https://appshunter.io/ios/app/id6807804969)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3級 教科書 | $3.99 | one-time |
| 統計検定2級 全問題解放 | $5.99 | one-time |
| 2級 教科書 | $5.99 | one-time |
| 3級 教科書＋問題集セット | $6.99 | one-time |
| 統計検定準1級 全問題解放 | $8.99 | one-time |
| 統計検定3級・2級パック | $9.99 | one-time |
| 2級 教科書＋問題集セット | $9.99 | one-time |
| 準1級 教科書 | $9.99 | one-time |
| 統計検定2級・準1級パック | $11.99 | one-time |
| 準1級 教科書＋問題集セット | $14.99 | one-time |


## Frequently asked questions

### Is DB合格ドリル free?

DB合格ドリル is free to download, with no in-app purchases.

### Is 統計学トレーナー free?

統計学トレーナー is free to download, with in-app purchases available.

### Do DB合格ドリル or 統計学トレーナー have ads?

DB合格ドリル shows ads; 統計学トレーナー does not.

### Which is updated more often, DB合格ドリル or 統計学トレーナー?

DB合格ドリル ships an update every 6 days, and 統計学トレーナー every 3 days. Most recently, DB合格ドリル was updated on October 15, 2026 and 統計学トレーナー on October 19, 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.*