Comparison

Hydraulic Power Unit vs Hydraulic System Calculator

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
Read full description

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

Hydraulic System Calculator

Calculate key parameters for hydraulic cylinders, pumps, motors, and pipes. Design individual components, view formulas, and switch between metric and imperial units for precise engineering.

Highlights
  • Calculate cylinder, pump, and motor parameters
  • Design single/double-acting cylinders
  • View and switch units (Metric/Imperial)
  • Calculate piping parameters
  • Dynamic result updates
  • Copy and share results
Features
Read full description

The Hydraulic System Calculator is an intuitive tool for people working with hydraulic cylinders, pumps, motors and pipes. This app enables design of individual hydraulic components around single-acting or double-acting cylinders. A user can look into the formulas involved and switch to their preferred units. Features at a glance: - By entering the requisite dimensions of the cylinder and parameters like the pressure and oil flow the user would be able to calculate the areas & volumes in the cylinder, extraction & retraction forces, velocity, time, outflow and ratio. The output is derived on both the piston and rod side of the cylinder - A backward compatibility is also provided on some of the parameters (force, time & velocity) in the cylinder area to provide users with the extension of using the calculator in more user friendly environment - The app enables the calculation of flow rate, pressure, displacement, speed, torque and power in Motor section - The app enables the calculation of displacement, flow rate, electric motor power and total efficiency in Pump section - The app can be used to calculate pressure drop around an orifice - Piping parameters like velocity, cross-sectional area and reynolds number can be calculated using absolute or kinematic viscosity - The calculations can be carried out in both Metric or Imperial units - The data provided is in conformation with ISO 3320, ISO 3321 and ISO 4393 in the cylinder section - The calculator is built to dynamically update the results as the user keys in the values - The input and output values could be displayed in preferred sub-units as per the requirements of the user after the calculation is carried out. It also helps the user to make specific changes in units before the calculations - Interactive images on cylinder section provides the user with a good understanding of the component - The results can be copied to clipboard and can be shared via e-mail

Screenshots

Hydraulic Power Unit4 screens
Hydraulic System Calculator4 screens

Verdict

The call

The clearest difference is update cadence: Hydraulic System Calculator at every 7 months against Hydraulic Power Unit's every 37 months. Hydraulic Power Unit's advantage is iOS requirement (6.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · 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, Hydraulic System Calculator every 7 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard2 real differences · 8 level
Hydraulic Power Unit versus Hydraulic System Calculator: the parameters behind the verdict, then further details
ParameterHydraulic Power UnitHydraulic System Calculator
PriceFreeFree
Rating—4.0 (3 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 37 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better14.0
Further details — not scored
Size4 MB94 MB
Age rating4+4+
DeveloperZanthic Automation Inc.Trelleborg Sealing Solutions

In-app purchases

None

Hydraulic Power Unit

No in-app purchases

None

Hydraulic System Calculator

No in-app purchases

Questions

Is Hydraulic Power Unit free?
Hydraulic Power Unit is free to download, with no in-app purchases.
Is Hydraulic System Calculator free?
Hydraulic System Calculator is free to download, with no in-app purchases.
Do Hydraulic Power Unit or Hydraulic System Calculator have ads?
Neither Hydraulic Power Unit nor Hydraulic System Calculator shows ads.
Which is updated more often, Hydraulic Power Unit or Hydraulic System Calculator?
Hydraulic Power Unit ships an update every 37 months, and Hydraulic System Calculator every 7 months. Most recently, Hydraulic Power Unit was updated on November 1, 2026 and Hydraulic System Calculator on November 2, 2026.

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