# 消防設備士4類 試験対策｜問題集 vs 記憶KEEPER

The clearest difference is price: 記憶KEEPER at Free against 消防設備士4類 試験対策｜問題集's $2.99. 記憶KEEPER also leads on update cadence (every 3 days vs every 3 weeks) and device support. On in-app purchases there is nothing between them.

記憶KEEPER is free to download; 消防設備士4類 試験対策｜問題集 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

消防設備士4類 試験対策｜問題集 ships an update every 3 weeks, 記憶KEEPER every 3 days. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 消防設備士4類 試験対策｜問題集 | 記憶KEEPER |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/4/id6763487725/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Paid | — |
| Size | 5 MB | 4 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RYOHEI HORIUCHI](https://appshunter.io/developer/1869799988) | [nao watanabe](https://appshunter.io/developer/1896686911) |

## What reviewers say

### 消防設備士4類 試験対策｜問題集

[App page](https://appshunter.io/ios/app/4/id6763487725)

This app provides comprehensive study materials for the Fire Equipment Engineer Type 4 exam, covering both Type A and Type B certifications. It features structured lessons, practice questions, and mock exams to help users efficiently prepare and improve their understanding of fire safety equipment.

**Highlights:** Covers Type A and Type B exams, Includes electrical basics and regulations, 4-choice practice questions, Review function for weak areas, Mock exam mode, Study during short breaks

**In-app purchases:** none


### 記憶KEEPER

[App page](https://appshunter.io/ios/app/keeper/id6769772312)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 消防設備士4類 試験対策｜問題集 free?

消防設備士4類 試験対策｜問題集 costs $2.99, with no in-app purchases.

### Is 記憶KEEPER free?

記憶KEEPER is free to download, with no in-app purchases.

### Which is updated more often, 消防設備士4類 試験対策｜問題集 or 記憶KEEPER?

消防設備士4類 試験対策｜問題集 ships an update every 3 weeks, and 記憶KEEPER every 3 days. Most recently, 消防設備士4類 試験対策｜問題集 was updated on September 18, 2026 and 記憶KEEPER on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*