# Gas International vs Atom (Site Engineer)

The clearest difference is in-app purchases: Atom (Site Engineer) at none against Gas International's 1. Atom (Site Engineer) also leads on update cadence (fortnightly vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Gas International sells 1 in-app purchase, starting at $179.99 per year. Atom (Site Engineer) asks for nothing beyond the download.

Gas International ships an update every 6 months, Atom (Site Engineer) fortnightly. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Gas International | Atom (Site Engineer) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Fortnightly** |
| Monetization | Subscription | — |
| Size | 16 MB | 51 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Syon Publishing Ltd (Apps)](https://appshunter.io/developer/604021747) | [Saphire Computers Limited](https://appshunter.io/developer/1164805098) |

## What reviewers say

### Gas International

[App page](https://appshunter.io/ios/app/gas-international/id690024430)

This official journal provides the latest news, features, and articles relevant to the entire gas industry, including upstream and downstream marketplaces. It offers content aimed at managers working in or alongside the gas sector. Access all issues with a subscription or IGEM membership.

**Highlights:** Latest gas sector news, IGEM activities updates, Upstream and downstream marketplace articles, Manager-focused content, Sample issue available for free, Subscription options

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gas International Auto Renew Subscription | $179.99 | per year |


### Atom (Site Engineer)

[App page](https://appshunter.io/ios/app/atom-site-engineer/id6449485838)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Gas International free?

Gas International is free to download, with in-app purchases available.

### Is Atom (Site Engineer) free?

Atom (Site Engineer) is free to download, with no in-app purchases.

### Do Gas International or Atom (Site Engineer) have ads?

Neither Gas International nor Atom (Site Engineer) shows ads.

### Which is updated more often, Gas International or Atom (Site Engineer)?

Gas International ships an update every 6 months, and Atom (Site Engineer) fortnightly. Most recently, Gas International was updated on November 1, 2026 and Atom (Site Engineer) on October 25, 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.*