Gas vs Pipe Diameter Calculators
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Gas
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The application allows the user to solve most of gas transportation problems, calculate the process of transporting natural gas (steam phase of LNG, LPG, associated petroleum gas, biogas) through a single-line pipeline. The graphical representation allows to instantly find the optimal solution and determine the influence of various factors on the gas transportation process. The application can help the user to get a calculation result that is sufficient for making an estimated engineering decision. Scope of application ⢠Distribution and internal gas supply systems ⢠Main-gas transport ⢠Gas distribution and gas collection networks Key Features Using the application can be calculated: ⢠gas flow rate in the pipeline for a given pressure drop and geometric characteristics of the pipeline ⢠pressure drop in the gas pipeline (final or initial pressure) for a given flow rate and pressure drop ⢠the length of the gas pipeline that provides a specified gas flow rate for a given pressure drop and diameter of the gas pipeline ⢠the required diameter of the gas pipeline, which provides a specified gas flow rate for a given pressure drop and length of the gas pipeline ⢠the blowdown time for stopped section of gas pipeline ⢠the required power of the gas compressor, which provides the necessary degree of pressure increase for a specified natural gas flow rate. The compression process is adiabatic. The calculation can be performed for a single-or multi-stage compressor. The application uses: General Fundamental Isothermal Flow Equation (the basic equation of gas flow), American Gas Association Equation (AGA NB-13 method), Weymouth Isothermal Flow Equation, Panhandle A Isothermal Flow Equation. Panhandle B Isothermal Flow Equation, Institute of Gas Technology Isothermal Flow Equation. The user can choose one of them. The properties of the transported gas are determined on base of its composition. The user can select the gas composition from the previously entered ones, edit, add a new one, or delete the previously entered gas composition. The user can also select the pipe wall material and, accordingly, the absolute roughness value from the previously entered ones, edit, add a new value, or delete the previously entered material name and roughness value. For the convenience of calculations, the application provides a wide range of applicable units of measurement, as well as standard conditions for measuring gas flow. The accuracy of the calculation methods used in the application corresponds to or exceeds the accuracy of the methods for obtaining initial data available in engineering practice. The data entered by the user is saved and transferred between the calculation forms, which allows the user to quickly consider the problem of calculating the parameters of the gas pipeline from all sides. The results can be saved as a pdf file, as well as printed out. Terms of use: https://www.gas-main.info/#terms-of-use Privacy Policy: https://www.gas-main.info/#privacy-policy
Pipe Diameter Calculators
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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
Screenshots
Verdict
The clearest difference is update cadence: Gas at every 6 months against Pipe Diameter Calculators's every 20 months. Gas also leads on iOS requirement (13.4 vs 15.6). 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
Both are free to download. Gas sells 1 one-off in-app purchase and Pipe Diameter Calculators sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Gas ships an update every 6 months, Pipe Diameter Calculators every 20 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.
| Parameter | Gas | Pipe Diameter Calculators |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months ā better | Every 20 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.4 ā better | 15.6 |
| Further details ā not scored | ||
| Size | 10 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Iurii Dubrov | Ashvin Kevadiya |
In-app purchases
Gas
- Get full App version$7.99
Pipe Diameter Calculators
- Lifetime$9.99
Questions
Is Gas free?
Is Pipe Diameter Calculators free?
Do Gas or Pipe Diameter Calculators have ads?
Which is updated more often, Gas or Pipe Diameter Calculators?
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