# UnitConverter byNSDev vs よろず換算アプリ

The clearest difference is ads: UnitConverter byNSDev at none against よろず換算アプリ's shown. よろず換算アプリ's advantage is update cadence (every 2 months vs every 5 months) and iOS requirement (11.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

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

UnitConverter byNSDev ships an update every 5 months, よろず換算アプリ every 2 months. The most recent releases landed on September 17, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | UnitConverter byNSDev | よろず換算アプリ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6449922225/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 4 MB | 56 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [Hirataka Saito](https://appshunter.io/developer/525369908) |

## What reviewers say

### UnitConverter byNSDev

[App page](https://appshunter.io/ios/app/unitconverter-bynsdev/id1229121492)

This tool converts between 26 different types of units, displaying conversion rates and allowing you to specify decimal places. It supports a vast array of units across categories like length, mass, volume, and more.

**Highlights:** Converts 26 types of units, Displays conversion rates, Customizable decimal places, Supports numerous units in various categories, User-submitted unit requests

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

**In-app purchases:** none


### よろず換算アプリ

[App page](https://appshunter.io/ios/app/id6449922225)

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

**In-app purchases:** none


## Frequently asked questions

### Is UnitConverter byNSDev free?

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

### Is よろず換算アプリ free?

よろず換算アプリ is free to download, with no in-app purchases.

### Do UnitConverter byNSDev or よろず換算アプリ have ads?

よろず換算アプリ shows ads; UnitConverter byNSDev does not.

### Which is updated more often, UnitConverter byNSDev or よろず換算アプリ?

UnitConverter byNSDev ships an update every 5 months, and よろず換算アプリ every 2 months. Most recently, UnitConverter byNSDev was updated on September 17, 2026 and よろず換算アプリ on August 20, 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.*