# Graycode vs Force Unit Converter

The clearest difference is price: Force Unit Converter at Free against Graycode's $2.99. Force Unit Converter also leads on rating (5.0 vs 3.0). Graycode's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.6). On ratings volume, update cadence, in-app purchases and device support there is nothing between them.

Force Unit Converter is free to download; Graycode costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Force Unit Converter holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Both ship on a similar rhythm, roughly every 10 months. The most recent releases landed on September 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Graycode | Force Unit Converter |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/graycode/id548428653/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/force-unit-converter/id1415262579/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | Every 10 months |
| Monetization | Paid | **Ad-supported** |
| Size | 2 MB | 6 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duo Pisceses, Inc.](https://appshunter.io/developer/850707063) | [Kei Suefuji](https://appshunter.io/developer/1388335881) |

## What reviewers say

### Graycode

[App page](https://appshunter.io/ios/app/graycode/id548428653)

This utility converts numbers between decimal, hexadecimal, binary, and Gray code formats. Changes to one value automatically update the others, making it a convenient tool for engineers. It also features an animated demonstration of the Tower of Hanoi puzzle.

**Highlights:** Decimal, hex, binary, Gray code conversion, Real-time updates, Handy calculator for engineers, Animated Tower of Hanoi solution, Supports iPhone, iPad, iPod

**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 Graycode free?

Graycode costs $2.99, with no in-app purchases.

### Is Force Unit Converter free?

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

### Which has better reviews, Graycode or Force Unit Converter?

Force Unit Converter is rated higher. Graycode averages 3.0 out of 5 from 2 ratings, while Force Unit Converter averages 5.0 from 3 ratings.

### Do Graycode or Force Unit Converter have ads?

Force Unit Converter shows ads; Graycode does not.

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

Graycode ships an update every 10 months, and Force Unit Converter every 10 months. Most recently, Graycode was updated on September 25, 2026 and Force Unit Converter on October 10, 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.*