Calculate liquid flow rate, pipe diameter, or velocity with ease. Customize units for diameter, velocity, and flow rate, and set your preferred decimal places for precise results.



247+ iOS apps curated and reviewed
Finding the right flow rate calculator alternative apps can be overwhelming with so many options. We've analyzed 247+ 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 | $0.99 | 4.3★ (44) | No | No | Aug 2026 | ||
| 2 | Free | 4.5★ (102) | No | Yes | Sep 2026 | ||
| 3 | Free | 5.0★ (7) | No | Yes | Sep 2026 | ||
| 4 | Free | 4.9★ (7) | No | Yes | Sep 2026 | ||
| 5 | Free | 4.6★ (5) | No | No | May 2026 | ||
| 6 | Free | — | No | Yes | May 2026 | ||
| 7 | Free | 4.1★ (63) | No | Yes | May 2026 | ||
| 8 | Free | 4.9★ (98) | No | No | Sep 2026 |



Calculate liquid flow rate, pipe diameter, or velocity with ease. Customize units for diameter, velocity, and flow rate, and set your preferred decimal places for precise results.






Calculate fluid flow rate and pressure loss in pipes. This app helps engineers determine pipe diameter, maximum pipe length, and friction loss for both liquid and gas flows, including fittings and elevation changes. Results can be shared as Excel or PDF reports.






This utility app calculates gas flow rates in pipes, accounting for friction and fitting losses using compressible isothermal equations. It offers extensive databases for materials, fittings, and gases, with customizable units and reporting options.