# 消防設備士4類・乙6ドリル − 製図・鑑別対策 vs 消防設備士 乙6・甲4・乙4・乙7 一問一答

The clearest difference is in-app purchases: 消防設備士4類・乙6ドリル − 製図・鑑別対策 at none against 消防設備士 乙6・甲4・乙4・乙7 一問一答's 4. 消防設備士4類・乙6ドリル − 製図・鑑別対策 also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. 消防設備士 乙6・甲4・乙4・乙7 一問一答 sells 4 one-off in-app purchases. 消防設備士4類・乙6ドリル − 製図・鑑別対策 asks for nothing beyond the download.

消防設備士4類・乙6ドリル − 製図・鑑別対策 ships an update weekly, 消防設備士 乙6・甲4・乙4・乙7 一問一答 every 4 days. The most recent releases landed on November 10, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | 消防設備士4類・乙6ドリル − 製図・鑑別対策 | 消防設備士 乙6・甲4・乙4・乙7 一問一答 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Size | 27 MB | 14 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Moeki Kozawa](https://appshunter.io/developer/1770452138) | [Particles and Waves](https://appshunter.io/developer/1812653811) |

## What reviewers say

### 消防設備士4類・乙6ドリル − 製図・鑑別対策

[App page](https://appshunter.io/ios/app/46/id6796460303)

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

**In-app purchases:** none


### 消防設備士 乙6・甲4・乙4・乙7 一問一答

[App page](https://appshunter.io/ios/app/6447/id6818698266)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Otsu 6 Pro (Full Unlock) | $2.99 | one-time |
| Kou 4 Pro (Full Unlock) | $2.99 | one-time |
| Otsu 7 Pro (Full Unlock) | $2.99 | one-time |
| Otsu 4 Pro (Full Unlock) | $2.99 | one-time |


## Frequently asked questions

### Is 消防設備士4類・乙6ドリル − 製図・鑑別対策 free?

消防設備士4類・乙6ドリル − 製図・鑑別対策 is free to download, with no in-app purchases.

### Is 消防設備士 乙6・甲4・乙4・乙7 一問一答 free?

消防設備士 乙6・甲4・乙4・乙7 一問一答 is free to download, with in-app purchases available.

### Do 消防設備士4類・乙6ドリル − 製図・鑑別対策 or 消防設備士 乙6・甲4・乙4・乙7 一問一答 have ads?

Neither 消防設備士4類・乙6ドリル − 製図・鑑別対策 nor 消防設備士 乙6・甲4・乙4・乙7 一問一答 shows ads.

### Which is updated more often, 消防設備士4類・乙6ドリル − 製図・鑑別対策 or 消防設備士 乙6・甲4・乙4・乙7 一問一答?

消防設備士4類・乙6ドリル − 製図・鑑別対策 ships an update weekly, and 消防設備士 乙6・甲4・乙4・乙7 一問一答 every 4 days. Most recently, 消防設備士4類・乙6ドリル − 製図・鑑別対策 was updated on November 10, 2026 and 消防設備士 乙6・甲4・乙4・乙7 一問一答 on November 8, 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.*