# UnitConverter byNSDev vs オフライン防災ガイド

The clearest difference is update cadence: オフライン防災ガイド at daily against UnitConverter byNSDev's every 5 months. オフライン防災ガイド also leads on iOS requirement (13.0 vs 15.6). On price, ads, 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, オフライン防災ガイド daily. Both last shipped on October 4, 2026.

## The numbers

| Metric | UnitConverter byNSDev | オフライン防災ガイド |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Daily** |
| Monetization | Free | — |
| Size | 4 MB | 27 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [IPPEI NAGAMINE](https://appshunter.io/developer/1860723239) |

## 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


### オフライン防災ガイド

[App page](https://appshunter.io/ios/app/id6775736059)

**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 オフライン防災ガイド free?

オフライン防災ガイド is free to download, with no in-app purchases.

### Do UnitConverter byNSDev or オフライン防災ガイド have ads?

Neither UnitConverter byNSDev nor オフライン防災ガイド shows ads.

### Which is updated more often, UnitConverter byNSDev or オフライン防災ガイド?

UnitConverter byNSDev ships an update every 5 months, and オフライン防災ガイド daily. Most recently, UnitConverter byNSDev was updated on October 4, 2026 and オフライン防災ガイド on October 4, 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.*