# CalcHistory vs 消防設備士乙6類 過去問・暗記アプリ

The clearest difference is in-app purchases: CalcHistory at none against 消防設備士乙6類 過去問・暗記アプリ's 3. CalcHistory also leads on iOS requirement (15.6 vs 17.0). 消防設備士乙6類 過去問・暗記アプリ's advantage is update cadence (every 10 days vs every 15 months). On price, ads and device support there is nothing between them.

Both are free to download. 消防設備士乙6類 過去問・暗記アプリ sells 3 one-off in-app purchases. CalcHistory asks for nothing beyond the download.

CalcHistory ships an update every 15 months, 消防設備士乙6類 過去問・暗記アプリ every 10 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CalcHistory | 消防設備士乙6類 過去問・暗記アプリ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/calchistory/id1231325032/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 70.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 15 months | **Every 10 days** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 42 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [sky-nexus Inc.](https://appshunter.io/developer/512522554) | [Hajime App Lab](https://appshunter.io/developer/1704838092) |

## What reviewers say

### CalcHistory

[App page](https://appshunter.io/ios/app/calchistory/id1231325032)

This calculator app performs calculations in the order you input them, like a standard calculator. It allows you to save calculation results and view the input process, making it easy to spot errors. It also offers a function calculator mode for more complex operations.

**Highlights:** Input order calculation, Save calculation results, View input process, Function calculator mode, Error spotting

**In-app purchases:** none


### 消防設備士乙6類 過去問・暗記アプリ

[App page](https://appshunter.io/ios/app/6/id6781278935)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告削除 | $3.99 | one-time |
| 全問題解放 | $3.99 | one-time |
| 広告削除+全問題解放 | $5.99 | one-time |


## Frequently asked questions

### Is CalcHistory free?

CalcHistory is free to download, with no in-app purchases.

### Is 消防設備士乙6類 過去問・暗記アプリ free?

消防設備士乙6類 過去問・暗記アプリ is free to download, with in-app purchases available.

### Do CalcHistory or 消防設備士乙6類 過去問・暗記アプリ have ads?

Both CalcHistory and 消防設備士乙6類 過去問・暗記アプリ show ads.

### Which is updated more often, CalcHistory or 消防設備士乙6類 過去問・暗記アプリ?

CalcHistory ships an update every 15 months, and 消防設備士乙6類 過去問・暗記アプリ every 10 days. Most recently, CalcHistory was updated on October 29, 2026 and 消防設備士乙6類 過去問・暗記アプリ on October 25, 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.*