# GB Gas Onsite Guide vs TrainAR

The clearest difference is update cadence: TrainAR at every 4 months against GB Gas Onsite Guide's every 72 months. 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.

GB Gas Onsite Guide ships an update every 72 months, TrainAR every 4 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | GB Gas Onsite Guide | TrainAR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 72 months | **Every 4 months** |
| Size | 19 MB | 126 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GB-GAS.CO.UK](https://appshunter.io/developer/425897007) | [TrainAR Limited](https://appshunter.io/developer/6786016891) |

## What reviewers say

### GB Gas Onsite Guide

[App page](https://appshunter.io/ios/app/gb-gas-onsite-guide/id1537237630)

**Features:** macOS Compatibility

**In-app purchases:** none


### TrainAR

[App page](https://appshunter.io/ios/app/trainar/id6786016889)

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

**In-app purchases:** none


## Frequently asked questions

### Is GB Gas Onsite Guide free?

GB Gas Onsite Guide is free to download, with no in-app purchases.

### Is TrainAR free?

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

### Do GB Gas Onsite Guide or TrainAR have ads?

Neither GB Gas Onsite Guide nor TrainAR shows ads.

### Which is updated more often, GB Gas Onsite Guide or TrainAR?

GB Gas Onsite Guide ships an update every 72 months, and TrainAR every 4 months. Most recently, GB Gas Onsite Guide was updated on October 25, 2026 and TrainAR on October 28, 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.*