# 消防設備士 乙6 試験対策 vs Denken 3rd Class

The clearest difference is price: Denken 3rd Class at Free against 消防設備士 乙6 試験対策's $4.99. Denken 3rd Class also leads on update cadence (daily vs every 3 weeks). 消防設備士 乙6 試験対策's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Denken 3rd Class is free to download; 消防設備士 乙6 試験対策 costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

消防設備士 乙6 試験対策 ships an update every 3 weeks, Denken 3rd Class daily. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 消防設備士 乙6 試験対策 | Denken 3rd Class |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 3 MB | 65 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [matsuo konan](https://appshunter.io/developer/6772919772) | [hyuncheol seo](https://appshunter.io/developer/6797554122) |

## What reviewers say

### 消防設備士 乙6 試験対策

[App page](https://appshunter.io/ios/app/6/id6783586555)

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

**In-app purchases:** none


### Denken 3rd Class

[App page](https://appshunter.io/ios/app/denken-3rd-class-passrun/id6809243739)

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

**In-app purchases:** none


## Frequently asked questions

### Is 消防設備士 乙6 試験対策 free?

消防設備士 乙6 試験対策 costs $4.99, with no in-app purchases.

### Is Denken 3rd Class free?

Denken 3rd Class is free to download, with no in-app purchases.

### Do 消防設備士 乙6 試験対策 or Denken 3rd Class have ads?

Denken 3rd Class shows ads; 消防設備士 乙6 試験対策 does not.

### Which is updated more often, 消防設備士 乙6 試験対策 or Denken 3rd Class?

消防設備士 乙6 試験対策 ships an update every 3 weeks, and Denken 3rd Class daily. Most recently, 消防設備士 乙6 試験対策 was updated on October 24, 2026 and Denken 3rd Class on October 18, 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.*