Compare Flow vs Hydraulic System Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Compare Flow
This application helps engineers and designers evaluate the hydraulic flow capacity of various non-pressure sewer pipe types. It allows for comparisons between different pipe geometries and materials, including concrete, thermoplastic, and metal options.
- Manning's Formula calculation
- Compare hydraulic flow capacity
- Evaluate pipe geometry alternatives
- Compare pipe material options
- Supports concrete, thermoplastic, and metal pipes
- Circular, elliptical, arch, and box sections
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Compare Flow app uses Manning's Formula, the most widely accepted formula for evaluating the hydraulic capacity of non-pressure sewers. In order to evaluate possible alternatives in either pipe geometry or material, use this app to compare the hydraulic flow capacity among various concrete pipes including circular, elliptical, arch and box sections with circular thermoplastic and corrugated metal pipes.
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.
- 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
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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
Verdict
The clearest difference is review sentiment: Compare Flow at 50% against Hydraulic System Calculator's 0%. Compare Flow also leads on rating (4.6 vs 4.0). Hydraulic System Calculator's advantage is update cadence (every 7 months vs every 32 months). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Compare Flow holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 50% of Compare Flow's written reviews are positive against 0% of Hydraulic System Calculator's.
Compare Flow ships an update every 32 months, Hydraulic System Calculator every 7 months. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.
| Parameter | Compare Flow | Hydraulic System Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) — better | 4.0 (3 ratings) |
| Positive reviews | 50.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 — better | 3 |
| Update frequency | Every 32 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 14.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | iENGINEERING Corporation | Trelleborg Sealing Solutions |
Customer experience
Compare Flow
Hydraulic System Calculator
In-app purchases
Compare Flow
No in-app purchases
Hydraulic System Calculator
No in-app purchases
Questions
Is Compare Flow free?
Is Hydraulic System Calculator free?
Which has better reviews, Compare Flow or Hydraulic System Calculator?
Do Compare Flow or Hydraulic System Calculator have ads?
Which is updated more often, Compare Flow or Hydraulic System Calculator?
Other comparisons
