250+ iOS apps curated and reviewed
If you already know Hydrant Flow Test Calculator, this is the deeper bench. 250+ hydrant flow test calculator apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (3) | No | No | Jul 2026 | |
| 2 |  | Free | 4.1★ (63) | No | Yes | May 2026 | |
| 3 |  | Free | 4.5★ (102) | No | Yes | Sep 2026 | |
| 4 |  | Free | 4.6★ (5) | No | No | May 2026 | |
| 5 |  | Free | — | No | No | May 2026 | |
| 6 |  | $1.99 | — | No | No | May 2026 | |
| 7 |  | Free | 4.5★ (12) | No | No | Jul 2026 | |
| 8 |  | Free | — | No | No | May 2026 |
This tool simplifies hydrant flow testing by calculating total GPM from pitot pressures. It allows for outlet settings, flow extrapolation with a Supply vs Demand curve, and plotting demand points for PASS/FAIL results. Save test data with location and project details for future reference.
Calculate hydrant flow rates and determine maximum water system flow. This tool uses a standard variation of the Hazen-Williams formula for calculations. Imperial units are currently supported, with metric coming soon.
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.
