# GMX AR vs Unit Converter

The clearest difference is in-app purchases: GMX AR at none against Unit Converter's 10. GMX AR also leads on ads (none vs shown) and iOS requirement (11.0 vs 17.0). Unit Converter's advantage is update cadence (weekly vs monthly). On price and device support there is nothing between them.

Both are free to download. Unit Converter sells 10 in-app purchases, starting at $0.99 per 7 days. GMX AR asks for nothing beyond the download.

GMX AR ships an update monthly, Unit Converter weekly. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GMX AR | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (9 ratings)](https://appshunter.io/ios/app/unit-converter-science-tools/id1557454960/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 481 MB | 19 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Prachaya martsongkarm](https://appshunter.io/developer/1307956084) | [Eugene Kugut](https://appshunter.io/developer/1557454962) |

## What reviewers say

### GMX AR

[App page](https://appshunter.io/ios/app/gmx-ar/id1307956085)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-science-tools/id1557454960)

This app offers over 30 unit converters for science, engineering, and everyday use. It features advanced options like adjustable rounding, smart search, and calculation history, with customizable themes and an iPad-optimized interface.

**Highlights:** Over 30 unit converters, Adjustable rounding, Smart search by name or units, Copy/paste values, Swap units with one button, Calculation history, Customizable themes

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium access | $0.99 | per 7 days |
| Premium access | $0.99 | per month |
| Premium access | $1.99 | per 7 days |
| Premium access | $1.99 | per month |
| Premium access | $2.99 | per month |
| Premium access | $8.99 | per year |
| Premium access | $9.99 | per year |
| Premium access | $17.99 | per year |
| Premium access | $19.99 | per year |
| Premium access | $44.99 | one-time |


## Frequently asked questions

### Is GMX AR free?

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

### Is Unit Converter free?

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

### Do GMX AR or Unit Converter have ads?

Unit Converter shows ads; GMX AR does not.

### Which is updated more often, GMX AR or Unit Converter?

GMX AR ships an update monthly, and Unit Converter weekly. Most recently, GMX AR was updated on October 4, 2026 and Unit Converter on October 24, 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.*