Flow Test Calculator

Name: Flow Test Calculator
Rating: 4.1 (63 reviews)
Author: Larry Owens

By: Larry Owens

Productivity

Features & Capabilities

Flow Test Calculator is a simple Chrome extension that helps you determine hydrant flow rates and the maximum flow available in a water system. It uses a standard variation of the Hazen-Williams formula to produce quick, on-device results.

All units are Imperial (Metric support coming soon), making it a practical tool for fieldwork and engineering planning.

User Growth & Download Statistics

App Developer Tools Data Analytics Education

By:

Larry Owens

Rating:

4.10

(63)

Version:

2.0 Last updated: 2021-09-01

Version code:

842815988

Creation date:

2014-04-18

Compatible devices:

Size:

1.55MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-05

Compare stats and ranking:

Ranking

# 186,663 ▼ 205

For Developers

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Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Larry Owens

Apple Apps Store

https://apps.apple.com/us/app/flow-test-calculator/id853530759

User Reviews

Users praise Flow Test Calculator for ease of use and field usefulness for hydrant and pump flow calculations, often using it daily. However, multiple reviews report it stops working after iOS updates, with issues across iOS 14.x versions. The main concern is the need for timely developer updates to maintain compatibility and reliability in the field.

Pros

Easy to use with a simple, intuitive interface.
Field-ready tool for fire hydrant and pump flow testing.
Used daily for work; praised as reliable and versatile.
Versatile for different flow calculations and scenarios.

Cons

iOS compatibility issues after updates; the app won't open or read results on newer iOS versions (examples include iOS 14.x, 14.5, 14.6 and devices like iPhone 12).
Ongoing maintenance is needed; users repeatedly request updates to keep the app functioning with current iOS versions.

Recent reviews

Can’t read the results on my iPhone12. It used to work😠

by D.*****, 2023-03-29

Great app. Use at work quite often. Tried using it the other day but will not open because it needs new update for the iOS.

by Te*****, 2021-06-24

So I buy the app it doesn’t operate with my phones iOS. You going to support your product with an update ? As for the product itself. I compared flow numbers using a calculator & this app. if the formula is correct they should match. App worked flawlessly easy to use as well as versatile. Could flow 2 1/2” port or 5 1/2” If you update the app I would absolutely give it five stars. If your own products aren’t worth your support. Then don’t look to me to support this or any other products produced by this company. Why should I support a product produced by people that do not care enough to support it themselves? I gave it one star because if you don’t update it is nothing more than a one hit wonder. Which of course makes me wonder “if it’s that way with the app I purchased why would any of the software applications produced by this company be different. “. need an app it’s going to work over a period of time specifically more than six months look somewhere else. “ would be the advise / word of mouth advertising you receive I will support your products with an upgrade of my review if you show your “products” are worth your support