# CAB（SPI） 【Study Pro】 vs 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ

The clearest difference is monetization model: 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ at free against CAB（SPI） 【Study Pro】's paid. CAB（SPI） 【Study Pro】's advantage is update cadence (every 3 weeks vs every 8 months) and iOS requirement (9.0 vs 12.0). On ads, in-app purchases and device support there is nothing between them.

CAB（SPI） 【Study Pro】 ships an update every 3 weeks, 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ every 8 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | CAB（SPI） 【Study Pro】 | 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ |
| --- | --- | --- |
| Price | **$2.99** | — |
| Rating | — | **[3.0 (4 ratings)](https://appshunter.io/ios/app/id6746373176/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 78.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 8 months |
| Monetization | Paid | **Free** |
| Size | 18 MB | 58 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Study Pro](https://appshunter.io/developer/476550254) | [株式会社キイロ乃カモ](https://appshunter.io/developer/1796537168) |

## What reviewers say

### CAB（SPI） 【Study Pro】

[App page](https://appshunter.io/ios/app/cabspi-study-pro/id517913763)

This app offers a comprehensive study tool for the CAB aptitude test, featuring an optimal learning mode that prioritizes unlearned and difficult questions. It includes a large volume of practice problems with detailed explanations and a high-function handwriting memo tool for jotting down intermediate results.

**Highlights:** Optimal learning mode, 103 practice questions, Detailed explanations, Handwriting memo tool, Focus on CAB aptitude test

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is CAB（SPI） 【Study Pro】 free?

CAB（SPI） 【Study Pro】 costs $2.99, with no in-app purchases.

### 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.

### Do CAB（SPI） 【Study Pro】 or 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ have ads?

Neither CAB（SPI） 【Study Pro】 nor 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ shows ads.

### Which is updated more often, CAB（SPI） 【Study Pro】 or 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ?

CAB（SPI） 【Study Pro】 ships an update every 3 weeks, and 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ every 8 months. Most recently, CAB（SPI） 【Study Pro】 was updated on October 30, 2026 and 技術士 上下水道部門 過去問集 | 専門科目の対策アプリ on October 30, 2026.

---

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