# 体積計算アプリ~Volume calculator~ vs Unit Converter ( Calculator )

The clearest difference is price: Unit Converter ( Calculator ) at Free against 体積計算アプリ~Volume calculator~'s $3.99. Unit Converter ( Calculator ) also leads on update cadence (monthly vs every 11 months). 体積計算アプリ~Volume calculator~'s advantage is ads (none vs shown) and iOS requirement (9.0 vs 15.0). On in-app purchases and device support there is nothing between them.

Unit Converter ( Calculator ) is free to download; 体積計算アプリ~Volume calculator~ costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

体積計算アプリ~Volume calculator~ ships an update every 11 months, Unit Converter ( Calculator ) monthly. Both last shipped on November 6, 2026.

## The numbers

| Metric | 体積計算アプリ~Volume calculator~ | Unit Converter ( Calculator ) |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[4.8 (130 ratings)](https://appshunter.io/ios/app/unit-converter-calculator/id904830056/reviews)** |
| Number of ratings | — | **130** |
| Positive reviews | — | 34.6% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | — | Ad-supported |
| Size | 3 MB | 6 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Takaaki Sasaki](https://appshunter.io/developer/525616408) | [EONSOFT](https://appshunter.io/developer/899851112) |

## What reviewers say

### 体積計算アプリ~Volume calculator~

[App page](https://appshunter.io/ios/app/volume-calculator/id547131606)

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

**In-app purchases:** none


### Unit Converter ( Calculator )

[App page](https://appshunter.io/ios/app/unit-converter-calculator/id904830056)

Easily convert between various units for length, weight, volume, temperature, and more. This tool offers a straightforward interface for quick and accurate conversions across multiple categories.

**Highlights:** Length conversion, Weight conversion, Width conversion, Volume conversion, Temperature conversion, Pressure conversion, Velocity conversion

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is 体積計算アプリ~Volume calculator~ free?

体積計算アプリ~Volume calculator~ costs $3.99, with no in-app purchases.

### Is Unit Converter ( Calculator ) free?

Unit Converter ( Calculator ) is free to download, with no in-app purchases.

### Do 体積計算アプリ~Volume calculator~ or Unit Converter ( Calculator ) have ads?

Unit Converter ( Calculator ) shows ads; 体積計算アプリ~Volume calculator~ does not.

### Which is updated more often, 体積計算アプリ~Volume calculator~ or Unit Converter ( Calculator )?

体積計算アプリ~Volume calculator~ ships an update every 11 months, and Unit Converter ( Calculator ) monthly. Most recently, 体積計算アプリ~Volume calculator~ was updated on November 6, 2026 and Unit Converter ( Calculator ) on November 6, 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.*