# GasFlowMeter vs IGC H₂

The clearest difference is ads: IGC H₂ at none against GasFlowMeter's shown. GasFlowMeter's advantage is iOS requirement (9.3 vs 13.4). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | GasFlowMeter | IGC H₂ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Every 5 days |
| Size | 22 MB | 17 MB |
| Requires iOS | **9.3** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rajam Raghu](https://appshunter.io/developer/893080670) | [Industrial Gas Consultants LLC](https://appshunter.io/developer/1725282233) |

## What reviewers say

### GasFlowMeter

[App page](https://appshunter.io/ios/app/gasflowmeter-flow-calibration/id1489078800)

**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 GasFlowMeter free?

GasFlowMeter 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 GasFlowMeter or IGC H₂ have ads?

GasFlowMeter shows ads; IGC H₂ does not.

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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.*