# 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ vs 機械保全1級

The clearest difference is in-app purchases: 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ at none against 機械保全1級's 1. 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ also leads on iOS requirement (12.0 vs 16.0). On update cadence, ads and device support there is nothing between them.

技術士 上下水道部門 過去問集 | 専門科目の対策アプリ ships an update every 8 months, 機械保全1級 every 9 months. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ | 機械保全1級 |
| --- | --- | --- |
| Price | — | **Free** |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/id6746373176/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 9 months |
| Monetization | Free | — |
| Size | 58 MB | 5 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [株式会社キイロ乃カモ](https://appshunter.io/developer/1796537168) | [TAKAYUKI OOTA](https://appshunter.io/developer/1855196437) |

## What reviewers say

### 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ

[App page](https://appshunter.io/ios/app/id6746373176)

This app provides past exam questions for the first-stage professional subject of civil engineering and waterworks for the Professional Engineer exam. It features offline use, ad-free study, and progress tracking with results analysis.

**Highlights:** Past exam questions (3 years), Offline use, Ad-free study environment, Question breakdown by exam, Randomized question sets, Review of incorrect/unanswered questions, Performance analysis with radar charts

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

**In-app purchases:** none


### 機械保全1級

[App page](https://appshunter.io/ios/app/1/id6758683168)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 機械保全1級（機械系保全作業） 試験対策 | $4.99 | one-time |


## Frequently asked questions

### Is 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ free?

Pricing for 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ is not currently listed on the App Store.

### Is 機械保全1級 free?

機械保全1級 is free to download, with in-app purchases available.

### Do 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ or 機械保全1級 have ads?

Neither 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ nor 機械保全1級 shows ads.

### Which is updated more often, 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ or 機械保全1級?

技術士 上下水道部門 過去問集 | 専門科目の対策アプリ ships an update every 8 months, and 機械保全1級 every 9 months. Most recently, 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ was updated on November 8, 2026 and 機械保全1級 on November 9, 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.*