250+ iOS apps curated and reviewed
Finding the right orifice flow rate calculator apps can be overwhelming with so many options. We've analyzed 250+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.9★ (114) | No | No | Oct 2026 | |
| 2 |  | Free | 4.9★ (8) | No | Yes | Oct 2026 | |
| 3 |  | Free | — | No | Yes | Jul 2026 | |
| 4 |  | Free | — | No | No | May 2026 | |
| 5 |  | $0.99 | 4.3★ (44) | No | No | Nov 2026 | |
| 6 |  | Free | 5.0★ (12) | No | Yes | Oct 2026 | |
| 7 |  | Free | 4.6★ (103) | No | Yes | Oct 2026 | |
| 8 |  | Free | — | No | Yes | May 2026 |
Easily calculate natural gas orifice flow rates using the AGA 3 standard. This utility app allows users to determine MCF production for a given duration, save calculations, and export data to CSV. It functions offline, requiring no cell service.
Calculate fluid flow rate in pipes, including friction and fitting losses, using accurate engineering equations. Features extensive databases for liquids, pipes, and fittings, with customizable units and reporting options.
