# Gas Calculator (UP1B) — Tightness & Purge Tool

> Professional gas installation calculation tool for engineers. (iPhone/iPad app by Radoslaw Talaska.)

- Source: https://appshunter.io/ios/app/gas-calculator-up1b/id6764619662 (this page in markdown: same URL + `.md`)
- Developer: [Radoslaw Talaska](https://appshunter.io/developer/1895852446)
- Category: Utilities, Productivity
- Price: $0.99
- Age rating: 4+
- Requires: iOS 15.1 · 32 MB
- Languages: American English
- Released: 2026-04-30
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/gas-calculator-up1b/id6764619662/reviews.md

## What is Gas Calculator (UP1B)?

The Gas Calculator (UP/1B) is a professional tool designed for Gas Safe Engineers.
It simplifies calculations for installation volume, tightness testing, and purge volume based on IGEM/UP/1B Edition 4 standards.

Key Features:  
• IV Calculator – Quickly determine installation volume.
• Tightness Test – Check allowable pressure drop limits.
• Purge Volume – Automatically calculate PV = 1.5 × IV.
• History – Review and manage past calculations.
Ideal for engineers performing gas safety checks and installations.
Developed to improve accuracy, efficiency, and compliance with UK gas safety regulations.

## Key features

- Installation volume calculation
- Tightness testing
- Purge volume calculation
- Calculation history
- Compliance with IGEM/UP/1B standards

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/gas-calculator-up1b/id6764619662/reviews.md

### 5/5 — App

*2026-04-30*

Very good

## Frequently asked questions about Gas Calculator (UP1B)

### What is Gas Calculator (UP1B) used for?

Gas Calculator (UP1B) is a professional tool for Gas Safe Engineers to simplify calculations for installation volume, tightness testing, and purge volume based on IGEM/UP/1B standards.

### Does Gas Calculator (UP1B) have ads?

No, Gas Calculator (UP1B) is ad-free, providing an uninterrupted user experience for professionals.

### What standards does Gas Calculator (UP1B) follow?

Gas Calculator (UP1B) is developed to comply with IGEM/UP/1B Edition 4 standards, ensuring accuracy and adherence to UK gas safety regulations.

### What devices is Gas Calculator (UP1B) available on?

Gas Calculator (UP1B) is available on iPhone and iPad devices.

### How much does Gas Calculator (UP1B) cost?

Gas Calculator (UP1B) is a paid application, priced at $0.99.

### Can I review past calculations in Gas Calculator (UP1B)?

Yes, Gas Calculator (UP1B) includes a history feature that allows users to review and manage their past calculations.

### When was Gas Calculator (UP1B) last updated?

The latest version of Gas Calculator (UP1B) is 1.1.0, which was last updated on May 1, 2026.

### What is the age rating for Gas Calculator (UP1B)?

Gas Calculator (UP1B) has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 2 releases)

### 1.1.0 — 2026-05-01

upgraded screenshots

### 1.0 — 2026-04-29

No release notes.

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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 2026-08-24.*