Comparison

Pipe Diameter Calculators vs FlowAnalyzer Viewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pipe Diameter Calculators

Features
Read full description

Size a pipe from the numbers you already have. Pipe Diameter Calculator finds the internal diameter of a circular pipe from your flow rate and target flow velocity, or checks the velocity in a pipe whose internal diameter you already know. Built for quick line sizing on site, at the desk or in class, it suits piping, mechanical and process engineers, plumbing and HVAC professionals, pipefitters and engineering students. TWO WAYS TO CALCULATE • Find the internal diameter: enter the flow rate, fluid density and target velocity • Check flow velocity: enter a known internal diameter and the flow rate VOLUME OR MASS FLOW • Start from a volume flow rate or a mass (weight) flow rate • Choose your inputs and the value to solve for on the Selection screen CLEAR RESULTS • Cross-sectional area of the pipe • Weight (mass) flow rate • Flow velocity • Internal pipe diameter METRIC AND IMPERIAL UNITS • Pick a unit for each input and each result from its own menu • Mix units freely, for example enter the diameter in centimeters and read the velocity in feet per second SIMPLE AND PRIVATE • One clean screen, a Calculate button and a one-tap clear button • Free to download • No data collected HOW IT HELPS DAY TO DAY • Pick a starting pipe size for a new line before you check it against your design standard • Check whether the velocity in an existing pipe is reasonable for the duty • Work through flow and velocity exercises for coursework and exams Results are a quick engineering estimate based on the values you enter. Always confirm final pipe sizes against the codes, standards and design criteria that apply to your project. Download Pipe Diameter Calculator and size your next line in seconds. In-app purchase Details: Lifetime Access for ads free version Privacy Policy : https://visionaso.in/manager/privacypolicy.html Terms of use : https://visionaso.in/manager/termscondition.html

About

FlowAnalyzer Viewer

Features
Read full description

FlowAnalyzer Viewer opens water network models (.inp files) on your iPhone or iPad, runs a hydraulic simulation with the EPANET 2.2 engine, and lets you inspect the results element by element. WHAT YOU CAN DO • Open .inp files from Files, Mail, AirDrop or cloud storage • Run a hydraulic simulation and step through the time periods • See the network on an interactive map: zoom, pan, touch and hold any node to see its data • Read pressure, head, demand, flow, velocity and headloss for junctions, pipes, pumps, tanks, reservoirs and valves • Review hydraulic and time options • Works offline. Your files stay on your device EDIT IN FLOWANALYZER Tap "Edit & simulate in FlowAnalyzer" on the network screen to send the network to FlowAnalyzer (if installed) to edit it. If FlowAnalyzer is not installed, its App Store page opens inside the viewer. The two apps are separate. They use different EPANET engine versions (2.2 and 2.3.5); results may differ. FREE FlowAnalyzer Viewer is free, with no limit on network size. To edit and create networks, there is FlowAnalyzer. PRIVACY No account, no ads, no tracking. The app collects no data. FlowAnalyzer Viewer uses the EPANET 2.2 engine to read and simulate .inp files. It is an independent app, not affiliated with, endorsed by or sponsored by the U.S. Environmental Protection Agency (EPA).

Screenshots

Pipe Diameter Calculators4 screens
FlowAnalyzer Viewer4 screens

Verdict

The call

The clearest difference is update cadence: FlowAnalyzer Viewer at every 2 months against Pipe Diameter Calculators's every 20 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Pipe Diameter Calculators sells 1 one-off in-app purchase and FlowAnalyzer Viewer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Pipe Diameter Calculators ships an update every 20 months, FlowAnalyzer Viewer every 2 months. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

Scorecard1 real difference Ā· 5 level
Pipe Diameter Calculators versus FlowAnalyzer Viewer: the parameters behind the verdict, then further details
ParameterPipe Diameter CalculatorsFlowAnalyzer Viewer
PriceFreeFree
Update frequencyEvery 20 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size59 MB1 MB
Age rating4+4+
DeveloperAshvin KevadiyaTransparent Blue Water LLC

In-app purchases

1 purchases

Pipe Diameter Calculators

One-time1
  • Lifetime$9.99
1 purchases

FlowAnalyzer Viewer

One-time1
  • HydroViewer Pro$2.99

Questions

Is Pipe Diameter Calculators free?
Pipe Diameter Calculators is free to download, with in-app purchases available.
Is FlowAnalyzer Viewer free?
FlowAnalyzer Viewer is free to download, with in-app purchases available.
Do Pipe Diameter Calculators or FlowAnalyzer Viewer have ads?
Neither Pipe Diameter Calculators nor FlowAnalyzer Viewer shows ads.
Which is updated more often, Pipe Diameter Calculators or FlowAnalyzer Viewer?
Pipe Diameter Calculators ships an update every 20 months, and FlowAnalyzer Viewer every 2 months. Most recently, Pipe Diameter Calculators was updated on October 25, 2026 and FlowAnalyzer Viewer on October 21, 2026.

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