# 第3種冷凍機械責任者試験問題集　りすさんシリーズ vs Jazz Theory

The clearest difference is price: Jazz Theory at Free 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 $2.99. Jazz Theory also leads on update cadence (every 2 weeks vs every 15 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Jazz Theory is free to download; 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 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, Jazz Theory every 2 weeks. The most recent releases landed on October 8, 2026 and October 24, 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 | Jazz Theory |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 7 MB | 20 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kazuki Baba](https://appshunter.io/developer/903350438) | [ryusei kukita](https://appshunter.io/developer/1896759294) |

## 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


### Jazz Theory

[App page](https://appshunter.io/ios/app/jazz-theory/id6770638400)

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

**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 Jazz Theory free?

Jazz Theory is free to download, 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 Jazz Theory 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 Jazz Theory 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 Jazz Theory?

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 Jazz Theory every 2 weeks. 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 Jazz Theory on October 24, 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.*