# 第3種冷凍機械責任者試験問題集　りすさんシリーズ vs 2021年3級機械保全技能士学科過去問

The clearest difference is update cadence: 2021年3級機械保全技能士学科過去問 at every 4 months against 第3種冷凍機械責任者試験問題集　りすさんシリーズ's every 15 months. 2021年3級機械保全技能士学科過去問 also leads on price ($1.99 vs $2.99) and iOS requirement (15.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

第3種冷凍機械責任者試験問題集　りすさんシリーズ costs $2.99 and 2021年3級機械保全技能士学科過去問 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

第3種冷凍機械責任者試験問題集　りすさんシリーズ ships an update every 15 months, 2021年3級機械保全技能士学科過去問 every 4 months. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 第3種冷凍機械責任者試験問題集　りすさんシリーズ | 2021年3級機械保全技能士学科過去問 |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 4 months** |
| Monetization | Paid | — |
| Size | 7 MB | 7 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kazuki Baba](https://appshunter.io/developer/903350438) | [shinji ikeda](https://appshunter.io/developer/1615407188) |

## What reviewers say

### 第3種冷凍機械責任者試験問題集　りすさんシリーズ

[App page](https://appshunter.io/ios/app/3/id1139518745)

This app provides practice questions for the 3rd Class Refrigeration Engineer exam, organized by year with a 5-choice format. It includes features to track incorrect answers and save progress for efficient study.

**Highlights:** Yearly question organization, 5-choice exam format, One-question-at-a-time mode, Correct answer rate display, Automatic incorrect question recall, Progress saving and resuming

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

**In-app purchases:** none


### 2021年3級機械保全技能士学科過去問

[App page](https://appshunter.io/ios/app/20213-2/id6477340547)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 第3種冷凍機械責任者試験問題集　りすさんシリーズ free?

第3種冷凍機械責任者試験問題集　りすさんシリーズ costs $2.99, with no in-app purchases.

### Is 2021年3級機械保全技能士学科過去問 free?

2021年3級機械保全技能士学科過去問 costs $1.99, with no in-app purchases.

### Do 第3種冷凍機械責任者試験問題集　りすさんシリーズ or 2021年3級機械保全技能士学科過去問 have ads?

Neither 第3種冷凍機械責任者試験問題集　りすさんシリーズ nor 2021年3級機械保全技能士学科過去問 shows ads.

### Which is updated more often, 第3種冷凍機械責任者試験問題集　りすさんシリーズ or 2021年3級機械保全技能士学科過去問?

第3種冷凍機械責任者試験問題集　りすさんシリーズ ships an update every 15 months, and 2021年3級機械保全技能士学科過去問 every 4 months. Most recently, 第3種冷凍機械責任者試験問題集　りすさんシリーズ was updated on October 8, 2026 and 2021年3級機械保全技能士学科過去問 on October 5, 2026.

---

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