# GB Gas Tightness NG + LPG — Gas NG+LPG Tigtness Testing

> App for Natural Gas and LPG tightness testing with guided steps and timers. (iPhone/iPad app by GB-GAS.CO.UK.)

- Source: https://appshunter.io/ios/app/gb-gas-tightness-ng-plus-lpg/id430236121 (this page in markdown: same URL + `.md`)
- Developer: [GB-GAS.CO.UK](https://appshunter.io/developer/425897007)
- Category: Business, Education
- Price: $4.99
- Age rating: 4+
- Requires: iOS 26.0 · 118 MB
- Languages: American English
- Released: 2011-04-11
- Data updated: 2026-09-09
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/gb-gas-tightness-ng-plus-lpg/id430236121/reviews.md

## What is GB Gas Tightness NG + LPG?

A Tightness testing app for NATURAL GAS & LPG
Natural Gas testing includes standard domestic testing and Medium operating systems, step by step guides and timers

LPG testing includes PROPANE intermediate and domestic 37mb and BUTANE 28mb testing and timers.

Once the test is started let the timer do the job for you an alarm will sound once the test is complete, follow the scrolling text guide to find out what to do next

## Key features

- Natural Gas tightness testing
- LPG tightness testing
- Step-by-step guides
- Timers with alarms
- Supports domestic and medium systems
- Supports propane, butane, and 37mb/28mb systems

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/gb-gas-tightness-ng-plus-lpg/id430236121/reviews.md

### 1/5 — Don't bother!!!!!!

*2017-06-06*

Expensive stop watch!!!!!! Don't bother if you have an iPhone it has a stop watch for free!!!!

### 3/5 — App tastic

*2013-10-26*

Very good app all in one but feel slightly hard done by as I bought the ng version now and this has both ng and lpg in one app

### 5/5 — Excellent app

*2012-04-09*

This app is brilliant an easy to use highly recemended

## Frequently asked questions about GB Gas Tightness NG + LPG

### What types of gas systems can GB Gas Tightness NG + LPG test?

GB Gas Tightness NG + LPG supports tightness testing for Natural Gas (domestic and medium operating systems) and LPG (Propane intermediate and domestic 37mb, Butane 28mb).

### Does GB Gas Tightness NG + LPG have ads?

No, GB Gas Tightness NG + LPG does not contain advertisements, providing an uninterrupted user experience.

### How does the timer function in GB Gas Tightness NG + LPG work?

Once a test is initiated, the app's timer runs automatically. An alarm will sound to notify you when the test is finished, and scrolling text will guide you on the next steps.

### What is the price of GB Gas Tightness NG + LPG?

GB Gas Tightness NG + LPG is available for a one-time purchase of $4.99.

### On which devices can I use GB Gas Tightness NG + LPG?

GB Gas Tightness NG + LPG is compatible with both iPhone and iPad devices.

### How often is GB Gas Tightness NG + LPG updated?

The latest version of GB Gas Tightness NG + LPG is version 8, and it was last updated on August 27, 2026. This indicates a recent update, suggesting ongoing support.

### What is the age rating for GB Gas Tightness NG + LPG?

GB Gas Tightness NG + LPG has an age rating of 4+, making it suitable for a wide range of users.

### Is GB Gas Tightness NG + LPG suitable for beginners?

Yes, the app features step-by-step guides and timers, which are designed to assist users through the tightness testing process.

## Version history (last 5 releases)

### 8 — 2026-08-27

A total update to bring the app in line with the requirements of IGEM/UP/1B for tightness testing, including allowable pressure drops for existing installations.

This update significantly expands the app and now includes:

Updated Natural Gas tightness testing procedures
Allowable pressure drop calculations for existing installations
Installation volume and meter volume calculations
Maximum Load Testing guidance
Propane tightness testing
Butane tightness testing
MOP installations with inlet pressures up to 2 bar
Intermediate-pressure LPG installations
Updated let-by, stabilisation and tightness test sequences
Improved step-by-step guidance and test timers
Updated diagrams and manometer illustrations

A major redevelopment of the original app, providing gas engineers and trainees with a much more comprehensive tool for carrying out and understanding tightness and soundness testing.

### 5 — 2020-07-27

Updates for latest IOS and Glitch repairs

### 4 — 2017-11-14

Minor Updates for new IOs

### 3 — 2017-08-16

IOS Updates

### 2.2 — 2014-01-16

minor glitch upgrade

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## More apps by GB-GAS.CO.UK

- [GB Gas Heat Input Calculator](https://appshunter.io/ios/app/gb-gas-heat-input-calculator/id426032737)
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All apps by GB-GAS.CO.UK: https://appshunter.io/developer/425897007

## Related topics

[gb gas tightness testing](https://appshunter.io/ios/topics/gb-gas-tightness-testing) · [gas tight](https://appshunter.io/ios/topics/gas-tight)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*