# UnitConverter byNSDev vs Force Unit Converter

The clearest difference is ads: UnitConverter byNSDev at none against Force Unit Converter's shown. UnitConverter byNSDev also leads on monetization model (free vs ad-supported) and update cadence (every 5 months vs every 10 months). On price, in-app purchases, device support and iOS requirement 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, Force Unit Converter every 10 months. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | UnitConverter byNSDev | Force Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/force-unit-converter/id1415262579/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 months** | Every 10 months |
| Monetization | **Free** | Ad-supported |
| Size | 4 MB | 6 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [Kei Suefuji](https://appshunter.io/developer/1388335881) |

## 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


### Force Unit Converter

[App page](https://appshunter.io/ios/app/force-unit-converter/id1415262579)

Easily convert force measurements between eight different units. Input a value and select the desired unit to see conversions for newton, dyne, kilogram-force, and more. This utility simplifies complex force calculations.

**Highlights:** Converts 8 types of force units, Supports Newton (N), kN, dyne (dyn), Includes kilogram-force (kgf), gf, tf, Converts pound-force (lbf) and poundal (pdl), Simple input and unit selection

**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 Force Unit Converter free?

Force Unit Converter is free to download, with no in-app purchases.

### Do UnitConverter byNSDev or Force Unit Converter have ads?

Force Unit Converter shows ads; UnitConverter byNSDev does not.

### Which is updated more often, UnitConverter byNSDev or Force Unit Converter?

UnitConverter byNSDev ships an update every 5 months, and Force Unit Converter every 10 months. Most recently, UnitConverter byNSDev was updated on September 17, 2026 and Force Unit Converter on September 21, 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.*