# Gas Tech vs World Hydrogen Summit

The clearest difference is iOS requirement: World Hydrogen Summit at 10.0 against Gas Tech's 12.2. On price, ads, 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 | Gas Tech | World Hydrogen Summit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Size | 56 MB | 22 MB |
| Requires iOS | 12.2 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rural Computer Consultants, Inc.](https://appshunter.io/developer/640795441) | [Reed Exhibitions Ltd](https://appshunter.io/developer/540373170) |

## What reviewers say

### Gas Tech

[App page](https://appshunter.io/ios/app/gas-tech/id6447905896)

**Features:** macOS Compatibility

**In-app purchases:** none


### World Hydrogen Summit

[App page](https://appshunter.io/ios/app/world-hydrogen-summit/id6767046850)

**In-app purchases:** none


## Frequently asked questions

### Is Gas Tech free?

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

### Is World Hydrogen Summit free?

World Hydrogen Summit is free to download, with no in-app purchases.

### Do Gas Tech or World Hydrogen Summit have ads?

Neither Gas Tech nor World Hydrogen Summit shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*