Comparison

Orifice Flow vs Hydraulic Cylinder Calc

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

Head to head
About

Orifice Flow

Calculate fluid flow rates in pipes and conduits using orifice plates. Supports common industrial fluids and custom fluid properties, with adjustable units and orifice types. Ideal for engineers and designers.

Highlights
  • Fluid flow rate computation
  • Supports 15 common industrial fluids
  • Custom fluid property input and saving
  • Multiple orifice plate types
  • Adjustable units (SI/USCS)
  • Detailed computation model documentation
Features
Read full description

Measurement of fluid flow in pipes and conduits using orifice plates are very common in industrial applications. This app quickly computes the flow rates for liquid and gases based on standard parameters as per the model shown. Users can pick any fluid from a list of fifteen most common fluids used in industrial applications. Therefore, this app can be a very helpful tool for practicing engineers and designers in design and analysis of flows in different applications. A case study on CO2 flow rate is shown in the screen shot. The result is consistent with other methods used by the industry in computation and difference is less than 0.1%. Fluids that are not in the list, users can create a custom fluid with property data and compute the flow rate using the model provided in this app. Custom fluid data can be saved and reloaded every time when custom fluid is selected. Fluids: Air, Steam, Water, Nitrogen, Oxygen, Hydrogen, Helium, CO2, Methane, Ethane, Chlorine, Ammonia, Argon, Hydraulic oil, HFC(R410A), Custom (user's choice). Orifice Type: App gives four different standard orifice design with recommended discharge coefficients as shown in the following screen shot. It also provides the details of the model used in the computation of flow rates for liquid and gases. This model is valid even for nozzles, venturi-flow meters for which the discharge coefficient (Cd) is unity. Measuring Parameters: Fluid inlet temperature and pressure, orifice geometry, pressure differential using standard pressure taps (ISO 5167), are the standard parameters required in the computation. Based on the orifice geometry, recommended discharge coefficient Cd is used. However, users can edit this using manufacturer’s data for more accurate results. App notes provides brief description of different orifice parameters for quick reference. Unit of Measurement: Users can choose different unit of measurement for both flow as well as pressure drop under given unit standard (SI or USCS). This can be conveniently selected while choosing the fluid from the picker list. App notes provides additional guideline with a link for complete documentation on implementation and validation of math-models used with industry examples.

About

Hydraulic Cylinder Calc

Calculate essential hydraulic cylinder parameters like areas, volumes, forces, and velocity. Supports both metric and imperial units with interactive 3D visuals. Results are easily copyable for use in other applications.

Highlights
  • On-the-fly calculations
  • Piston and Rod side results
  • Interactive 3D images
  • Metric and Imperial units
  • Copy-able results
  • Ad-free and private
Features
Read full description

The Hydraulic Cylinder Calculator is a comprehensive tool designed for working with hydraulic cylinders. Users can input parameters such as piston diameter, pressure, and oil flow to calculate various aspects of the cylinder, including areas, volumes, ratio, extraction and retraction forces, velocity, time, and outflow. Features: - On-the-fly calculations based on user-input parameters like piston diameter, pressure, and oil flow. - Results are provided for both the Piston and Rod sides of the Hydraulic Cylinder. - Interactive 3D images illustrate key parameters, enhancing the user's understanding of the Hydraulic Cylinder system. - Support for both Metric and Imperial units. - Copy-able results to clipboard. - Works seamlessly on both iPhone and iPad. - Lightweight, compact app optimized for everyday use. - Ad-free and built with privacy in mind. A hydraulic cylinder, also known as a linear hydraulic motor, is a mechanical actuator used to provide a unidirectional force through a unidirectional stroke. It finds applications in construction equipment (engineering vehicles), manufacturing machinery, and civil engineering. Hydraulic cylinders are powered by pressurized hydraulic fluid, typically oil. The cylinder comprises a cylinder barrel, a piston connected to a piston rod that moves back and forth. The barrel is closed by the cylinder bottom (cap) on one end and the cylinder head (gland) on the other end, where the piston rod emerges. The piston has sliding rings and seals, dividing the cylinder into two chambers – the bottom chamber (cap end) and the piston rod side chamber (rod end/head end). Flanges, trunnions, clevises, and lugs are common mounting options for cylinders. The piston rod also has attachments for connecting the cylinder to the object or machine component it pushes or pulls. The hydraulic cylinder acts as the actuator or "motor" side of the system, while the hydraulic pump serves as the "generator" side, delivering a fixed or regulated oil flow to move the piston. The piston, in turn, pushes the oil in the opposite chamber back to the reservoir. During the extension stroke, assuming the oil enters from the cap end and the oil pressure in the rod end/head end is approximately zero, the force (F) on the piston rod equals the pressure (P) in the cylinder times the piston area (A). Thanks for your support, and please visit nitrio.com for more apps for your iOS devices.

Screenshots

Orifice Flow4 screens
Hydraulic Cylinder Calc4 screens

Verdict

The call

The clearest difference is rating: Hydraulic Cylinder Calc at 5.0 against Orifice Flow's 4.0. Hydraulic Cylinder Calc also leads on price ($2.99 vs $3.99). Orifice Flow's advantage is update cadence (every 12 months vs every 33 months). On ratings volume, ads, in-app purchases and monetization model 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

Orifice Flow costs $3.99 and Hydraulic Cylinder Calc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Hydraulic Cylinder Calc holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Orifice Flow ships an update every 12 months, Hydraulic Cylinder Calc every 33 months. The most recent releases landed on September 9, 2026 and June 24, 2026 respectively.

Scorecard3 real differences · 7 level
Orifice Flow versus Hydraulic Cylinder Calc: the parameters behind the verdict, then further details
ParameterOrifice FlowHydraulic Cylinder Calc
Price$3.99$2.99 — better
Rating4.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews
Number of ratings11
Update frequencyEvery 12 months — betterEvery 33 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.313 — better
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperKaup Shenoy AssociatesTan Chia Ling

Customer experience

Orifice Flow

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Hydraulic Cylinder Calc

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Orifice Flow

No in-app purchases

None

Hydraulic Cylinder Calc

No in-app purchases

Questions

Is Orifice Flow free?
Orifice Flow costs $3.99, with no in-app purchases.
Is Hydraulic Cylinder Calc free?
Hydraulic Cylinder Calc costs $2.99, with no in-app purchases.
Which has better reviews, Orifice Flow or Hydraulic Cylinder Calc?
Hydraulic Cylinder Calc is rated higher. Orifice Flow averages 4.0 out of 5 from 1 ratings, while Hydraulic Cylinder Calc averages 5.0 from 1 ratings.
Do Orifice Flow or Hydraulic Cylinder Calc have ads?
Neither Orifice Flow nor Hydraulic Cylinder Calc shows ads.
Which is updated more often, Orifice Flow or Hydraulic Cylinder Calc?
Orifice Flow ships an update every 12 months, and Hydraulic Cylinder Calc every 33 months. Most recently, Orifice Flow was updated on September 9, 2026 and Hydraulic Cylinder Calc on June 24, 2026.

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