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.



250+ iOS apps curated and reviewed
Finding the right flow rate help 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 | $0.99 | 4.3★ (44) | No | No | Aug 2026 | ||
| 2 | Free | 4.8★ (90K) | No | No | Sep 2026 | ||
| 3 | Free | 4.9★ (7) | No | Yes | Sep 2026 | ||
| 4 | Free | 5.0★ (7) | No | Yes | Sep 2026 | ||
| 5 | Free | 4.7★ (6) | No | Yes | Aug 2026 | ||
| 6 | Free | 5.0★ (1) | No | No | May 2026 | ||
| 7 | Free | 4.7★ (3) | No | No | May 2026 | ||
| 8 | Free | — | No | No | May 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.






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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.