# Ultimate Unit Converter Pro vs IGC H₂

The clearest difference is iOS requirement: IGC H₂ at 13.4 against Ultimate Unit Converter Pro's 17.0. 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.

Ultimate Unit Converter Pro ships an update every 3 days, IGC H₂ every 5 days. The most recent releases landed on June 10, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Ultimate Unit Converter Pro | IGC H₂ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ultimate-unit-converter-pro/id6463096286/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Monetization | Free | — |
| Size | 1 MB | 17 MB |
| Requires iOS | 17.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Talal El Zeini](https://appshunter.io/developer/1521747288) | [Industrial Gas Consultants LLC](https://appshunter.io/developer/1725282233) |

## What reviewers say

### Ultimate Unit Converter Pro

[App page](https://appshunter.io/ios/app/ultimate-unit-converter-pro/id6463096286)

This utility app provides a streamlined way to perform unit conversions quickly and efficiently. It's designed to be an essential tool for users who need to make calculations on the go. Elevate your conversion experience with this powerful application.

**Highlights:** Seamless unit conversion, Quick calculations, Efficient workflow, Essential utility tool, Pro-grade experience

**Features:** macOS Compatibility

**In-app purchases:** none


### IGC H₂

[App page](https://appshunter.io/ios/app/igc-h-co-unit-conversion-app/id6475814418)

**In-app purchases:** none


## Frequently asked questions

### Is Ultimate Unit Converter Pro free?

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

### Is IGC H₂ free?

IGC H₂ is free to download, with no in-app purchases.

### Do Ultimate Unit Converter Pro or IGC H₂ have ads?

Neither Ultimate Unit Converter Pro nor IGC H₂ shows ads.

### Which is updated more often, Ultimate Unit Converter Pro or IGC H₂?

Ultimate Unit Converter Pro ships an update every 3 days, and IGC H₂ every 5 days. Most recently, Ultimate Unit Converter Pro was updated on June 10, 2026 and IGC H₂ on September 11, 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.*