238+ iOS apps curated and reviewed
Out of 238+ gas rate calculator apps on iOS, 17 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $4.99 | — | No | No | Sep 2026 | |
| 2 |  | $4.99 | — | No | No | Jul 2026 | |
| 3 |  | Free was $4.99 | — | No | Yes | Sep 2026 | |
| 4 |  | Free | — | No | Yes | May 2026 | |
| 5 |  | Free | 5.0★ (7) | No | No | Sep 2026 | |
| 6 |  | $0.99 | — | No | No | Sep 2026 | |
| 7 |  | Free | 4.9★ (98) | No | No | Sep 2026 | |
| 8 |  | Free | 5.0★ (6) | No | No | Jul 2026 |
This app provides tools for calculating gas rates, performing tightness and let-by tests, and converting units. It includes a comprehensive guide with detailed procedures and supports various gas types and meter configurations for accurate results.
Calculate domestic gas rates for Imperial and Metric gas meters up to 16 cubic metres. This tool is designed for Gas Service Engineers and Installers, offering the ability to email results directly.
This tool simplifies calculating heat input and gas rates for natural gas installations. It offers an enhanced version with adjustable calorific values and accommodates shorter timing intervals for metric meters, providing quick and accurate results without manual chart lookups.
