# UnitConverter byNSDev vs Logitec EXtorage Link

The clearest difference is review sentiment: UnitConverter byNSDev at 20% against Logitec EXtorage Link's 2%. On price, update cadence, ads and in-app purchases 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, Logitec EXtorage Link every 3 months. The most recent releases landed on November 2, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | UnitConverter byNSDev | Logitec EXtorage Link |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **20.0% of reviews** | 2.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 4 MB | 8 MB |
| Requires iOS | 15.6 | **14.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [LOGITEC INA SOLUTIONS CO.,LTD.](https://appshunter.io/developer/1568656074) |

## 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


### Logitec EXtorage Link

[App page](https://appshunter.io/ios/app/logitec-extorage-link/id1273688631)

Manage your files effortlessly by connecting external USB storage to your device. Back up and transfer music, photos, documents, and more without needing a computer or internet connection. This app simplifies file management and ensures your data is safe.

**Highlights:** External USB storage connection, File backup and management, Transfer files between iOS and PC, Direct photo saving to USB, Contact backup, Supports various file types

**In-app purchases:** none


## Frequently asked questions

### Is UnitConverter byNSDev free?

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

### Is Logitec EXtorage Link free?

Logitec EXtorage Link is free to download, with no in-app purchases.

### Do UnitConverter byNSDev or Logitec EXtorage Link have ads?

Neither UnitConverter byNSDev nor Logitec EXtorage Link shows ads.

### Which is updated more often, UnitConverter byNSDev or Logitec EXtorage Link?

UnitConverter byNSDev ships an update every 5 months, and Logitec EXtorage Link every 3 months. Most recently, UnitConverter byNSDev was updated on November 2, 2026 and Logitec EXtorage Link on November 13, 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.*