Comparison

Hydraulic Power Unit 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

Hydraulic Power Unit

Features
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The Hydraulic Power Unit Calculator can be used to determine the electrical power required for specific flow and pressure parameters. User can enter values for pump efficiency, oil flow and hydraulic pressure. Calculations will be made to determine required motor power. The user can then select or enter custom power source specifications (Voltage, Single/3 Phase, Power Factor, Motor Efficiency) to determine the amperage draw required. Reservoir design page includes calculations for tank size, oil volume and heat dissipation. Values are entered in either metric or imperial units. Results are shown for both metric and imperial. There is also a Speed - Torque - Power calculator. Enter any two variables and have the third calculated. Unit conversions are built into the calculation page.

About

FlowAnalyzer Viewer

Features
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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

Hydraulic Power Unit4 screens
FlowAnalyzer Viewer4 screens

Verdict

The call

The clearest difference is update cadence: FlowAnalyzer Viewer at every 2 months against Hydraulic Power Unit's every 37 months. Hydraulic Power Unit's advantage is iOS requirement (6.0 vs 15.0). 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Hydraulic Power Unit ships an update every 37 months, FlowAnalyzer Viewer every 2 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Hydraulic Power Unit versus FlowAnalyzer Viewer: the parameters behind the verdict, then further details
ParameterHydraulic Power UnitFlowAnalyzer Viewer
PriceFreeFree
Update frequencyEvery 37 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better15.0
Further details — not scored
Size4 MB1 MB
Age rating4+4+
DeveloperZanthic Automation Inc.Transparent Blue Water LLC

In-app purchases

None

Hydraulic Power Unit

No in-app purchases

None

FlowAnalyzer Viewer

No in-app purchases

Questions

Is Hydraulic Power Unit free?
Hydraulic Power Unit is free to download, with no in-app purchases.
Is FlowAnalyzer Viewer free?
FlowAnalyzer Viewer is free to download, with no in-app purchases.
Do Hydraulic Power Unit or FlowAnalyzer Viewer have ads?
Neither Hydraulic Power Unit nor FlowAnalyzer Viewer shows ads.
Which is updated more often, Hydraulic Power Unit or FlowAnalyzer Viewer?
Hydraulic Power Unit ships an update every 37 months, and FlowAnalyzer Viewer every 2 months. Most recently, Hydraulic Power Unit was updated on October 26, 2026 and FlowAnalyzer Viewer on October 30, 2026.

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