# 2021年2級機械保全技能士学科過去問 vs Saxophone Sight Reading

The clearest difference is price: 2021年2級機械保全技能士学科過去問 at $1.99 against Saxophone Sight Reading's $12.99. 2021年2級機械保全技能士学科過去問 also leads on update cadence (monthly vs every 4 months). Saxophone Sight Reading's advantage is iOS requirement (11.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

2021年2級機械保全技能士学科過去問 costs $1.99 and Saxophone Sight Reading $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

2021年2級機械保全技能士学科過去問 ships an update monthly, Saxophone Sight Reading every 4 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | 2021年2級機械保全技能士学科過去問 | Saxophone Sight Reading |
| --- | --- | --- |
| Price | **$1.99** | $12.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 7 MB | 182 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [shinji ikeda](https://appshunter.io/developer/1615407188) | [Oleg Sokolov](https://appshunter.io/developer/1628122395) |

## What reviewers say

### 2021年2級機械保全技能士学科過去問

[App page](https://appshunter.io/ios/app/20212/id6443544539)

**In-app purchases:** none


### Saxophone Sight Reading

[App page](https://appshunter.io/ios/app/saxophone-sight-reading/id6447369670)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 2021年2級機械保全技能士学科過去問 free?

2021年2級機械保全技能士学科過去問 costs $1.99, with no in-app purchases.

### Is Saxophone Sight Reading free?

Saxophone Sight Reading costs $12.99, with no in-app purchases.

### Do 2021年2級機械保全技能士学科過去問 or Saxophone Sight Reading have ads?

Neither 2021年2級機械保全技能士学科過去問 nor Saxophone Sight Reading shows ads.

### Which is updated more often, 2021年2級機械保全技能士学科過去問 or Saxophone Sight Reading?

2021年2級機械保全技能士学科過去問 ships an update monthly, and Saxophone Sight Reading every 4 months. Most recently, 2021年2級機械保全技能士学科過去問 was updated on October 30, 2026 and Saxophone Sight Reading on October 30, 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.*