# GUTCalc Physics Unit Converter vs Command

The clearest difference is in-app purchases: Command at none against GUTCalc Physics Unit Converter's 1. Command also leads on update cadence (every 5 days vs every 4 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. GUTCalc Physics Unit Converter sells 1 one-off in-app purchase. Command asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for GUTCalc Physics Unit Converter against 5.0 for Command. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

GUTCalc Physics Unit Converter ships an update every 4 months, Command every 5 days. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | GUTCalc Physics Unit Converter | Command |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/gutcalc-physics-unit-converter/id1526914857/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/command-line-calculator/id1565921216/reviews) |
| Number of ratings | **6** | 5 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 3 MB | 1 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Timothy Wiser](https://appshunter.io/developer/1526914859) | [Ketan Appa](https://appshunter.io/developer/576435759) |

## What reviewers say

### GUTCalc Physics Unit Converter

[App page](https://appshunter.io/ios/app/gutcalc-physics-unit-converter/id1526914857)

This calculator handles complex physics calculations with units. It supports SI, natural, and CGS units, physical constants, and functions. It automatically converts units and flags algebraic errors, with an option to upgrade for advanced organization and syncing features.

**Highlights:** SI, Natural, and CGS unit modes, Automatic unit conversion, Physical constants and functions, Implied multiplication, Custom keyboards, Unit checking for algebraic errors, Share and save results

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GUTCalc Pro | $2.99 | one-time |


### Command

[App page](https://appshunter.io/ios/app/command-line-calculator/id1565921216)

This app offers a command-line interface for performing complex calculations, including chained operations, variable assignments, and advanced mathematical functions. It supports various number bases, constants, and provides a built-in help system for ease of use.

**Highlights:** Command-line interface, Chained calculations, Variable assignment, Complex numbers, Multiple number bases, Unit and function definition, Extensive math functions

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GUTCalc Physics Unit Converter free?

GUTCalc Physics Unit Converter is free to download, with in-app purchases available.

### Is Command free?

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

### Which has better reviews, GUTCalc Physics Unit Converter or Command?

GUTCalc Physics Unit Converter and Command are both rated 5.0 out of 5 on the App Store, from 6 and 5 ratings respectively.

### Do GUTCalc Physics Unit Converter or Command have ads?

Neither GUTCalc Physics Unit Converter nor Command shows ads.

### Which is updated more often, GUTCalc Physics Unit Converter or Command?

GUTCalc Physics Unit Converter ships an update every 4 months, and Command every 5 days. Most recently, GUTCalc Physics Unit Converter was updated on September 11, 2026 and Command on September 9, 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.*