# Volume Units Converter vs 计算器 EMMO

The clearest difference is update cadence: 计算器 EMMO at monthly against Volume Units Converter's every 32 months. 计算器 EMMO also leads on ratings volume (20 vs 1) and iOS requirement (13.0 vs 15.0). On price, rating, ads and in-app purchases there is nothing between them.

Volume Units Converter costs $1.99 and 计算器 EMMO $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Volume Units Converter against 5.0 for 计算器 EMMO. That said, the two scores are not equally well evidenced: 计算器 EMMO has 20 ratings behind it against 1, so its average is the more settled of the two.

Volume Units Converter ships an update every 32 months, 计算器 EMMO monthly. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Volume Units Converter | 计算器 EMMO |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/volume-units-converter/id1443940327/reviews) | [5.0 (20 ratings)](https://appshunter.io/ios/app/emmo/id1605744253/reviews) |
| Number of ratings | 1 | **20** |
| Positive reviews | — | 85.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 1 MB | 10 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kei Suefuji](https://appshunter.io/developer/1388335881) | [EMMO Corp.](https://appshunter.io/developer/1507868195) |

## What reviewers say

### Volume Units Converter

[App page](https://appshunter.io/ios/app/volume-units-converter/id1443940327)

Easily convert volume measurements between 18 different units. Simply input your value and select the desired units for instant conversion. Supports a wide range of common and specialized volume measurements.

**Highlights:** Converts between 18 volume units, Supports cubic meters, liters, gallons, and more, Intuitive input and unit selection, Displays converted values instantly, Covers UK and US liquid/dry measurements

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

**In-app purchases:** none


### 计算器 EMMO

[App page](https://appshunter.io/ios/app/emmo/id1605744253)

A professional scientific calculator with a user-friendly interface and customizable themes. It offers advanced functions beyond the standard system calculator, along with a history log for easy access to past calculations.

**Highlights:** Advanced scientific functions, Customizable themes, History log, Multiple sound effects, Smart and convenient operation

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

**In-app purchases:** none


## Frequently asked questions

### Is Volume Units Converter free?

Volume Units Converter costs $1.99, with no in-app purchases.

### Is 计算器 EMMO free?

计算器 EMMO costs $1.99, with no in-app purchases.

### Which has better reviews, Volume Units Converter or 计算器 EMMO?

Volume Units Converter and 计算器 EMMO are both rated 5.0 out of 5 on the App Store, from 1 and 20 ratings respectively.

### Do Volume Units Converter or 计算器 EMMO have ads?

Neither Volume Units Converter nor 计算器 EMMO shows ads.

### Which is updated more often, Volume Units Converter or 计算器 EMMO?

Volume Units Converter ships an update every 32 months, and 计算器 EMMO monthly. Most recently, Volume Units Converter was updated on October 10, 2026 and 计算器 EMMO on October 14, 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.*