245+ iOS apps curated and reviewed
Looking for free pipe sizing calculator apps? 12 of our 245+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $4.99 | 4.0★ (1) | No | No | Jul 2026 | |
| 2 |  | $1.99 | 4.0★ (4) | No | No | Oct 2026 | |
| 3 |  | $9.99 | — | No | No | Aug 2026 | |
| 4 |  | Free | 4.7★ (137) | Yes | Yes | Oct 2026 | |
| 5 |  | $3.99 | — | No | No | Aug 2026 | |
| 6 |  | Free | 3.8★ (9) | No | No | Aug 2026 | |
| 7 |  | Free | 3.4★ (5) | No | Yes | Aug 2026 | |
| 8 |  | Free | — | No | No | Oct 2026 |
This app helps installers select the correct gas pipe sizes for boiler installations. It calculates the minimum required pipe diameter and pressure drop based on gas type, appliance input, pipe length, and fittings. Supports copper, steel, and PE pipes.
This utility app simplifies gas pipe sizing by performing calculations based on BTU load, run length, and gas type. It eliminates the need for manual chart and codebook referencing, providing the minimum required pipe size quickly.
This tool calculates natural gas pipe sizes for metric copper, stainless, and semi-rigid pipes in the UK. Input appliance gas rates, pipe length, and bends to determine if the installation meets the 1mb drop requirement from meter to appliance. It also suggests the appropriate gas meter size.
