# 2級ボイラー技士試験 過去問集 vs おつよん

The clearest difference is update cadence: おつよん at fortnightly against 2級ボイラー技士試験 過去問集's every 2 months. おつよん also leads on device support (3 vs 1) and iOS requirement (14.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

2級ボイラー技士試験 過去問集 ships an update every 2 months, おつよん fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | 2級ボイラー技士試験 過去問集 | おつよん |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 11 MB | 26 MB |
| Requires iOS | 26.0 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kenta Momiyama](https://appshunter.io/developer/1394560747) | [HIROKI HORIGUCHI](https://appshunter.io/developer/1535451720) |

## What reviewers say

### 2級ボイラー技士試験 過去問集

[App page](https://appshunter.io/ios/app/2/id1595430564)

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

**In-app purchases:** none


### おつよん

[App page](https://appshunter.io/ios/app/id6443517450)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 2級ボイラー技士試験 過去問集 free?

2級ボイラー技士試験 過去問集 is free to download, with no in-app purchases.

### Is おつよん free?

おつよん is free to download, with no in-app purchases.

### Do 2級ボイラー技士試験 過去問集 or おつよん have ads?

Both 2級ボイラー技士試験 過去問集 and おつよん show ads.

### Which is updated more often, 2級ボイラー技士試験 過去問集 or おつよん?

2級ボイラー技士試験 過去問集 ships an update every 2 months, and おつよん fortnightly. Most recently, 2級ボイラー技士試験 過去問集 was updated on October 24, 2026 and おつよん 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.*