Comparison

Volume in Pipe vs Pipe Diameter Calculators

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

Head to head
About

Volume in Pipe

Quickly estimate the gas volume within pipes, launchers, or vessels. Input operating conditions and pipe size for an approximate volume calculation. This tool is designed for rapid field estimates.

Highlights
  • Estimate gas volume
  • Input operating conditions
  • Select pipe size
  • Quick field estimates
  • Supports iPhone
Features
Read full description

Volume in Pipe (V.i.P.) is a simple, efficient tool for estimating the gas volume contained in a pipe, pig launcher/receiver, or vessel. Enter basic operating conditions, select a pipe size, and the app provides an approximate volume based on general assumptions. This tool is intended for quick field estimates only. It does not incorporate detailed gas analysis, which may significantly affect calculated volumes.

About

Pipe Diameter Calculators

Features
Read full description

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

Volume in Pipe4 screens
Pipe Diameter Calculators4 screens

Verdict

The call

The clearest difference is in-app purchases: Volume in Pipe at none against Pipe Diameter Calculators's 1. Pipe Diameter Calculators's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement 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. Pipe Diameter Calculators sells 1 one-off in-app purchase. Volume in Pipe asks for nothing beyond the download.

UpkeepUpdate frequency

Volume in Pipe ships an update every 26 months, Pipe Diameter Calculators every 20 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

Scorecard2 real differences · 7 level
Volume in Pipe versus Pipe Diameter Calculators: the parameters behind the verdict, then further details
ParameterVolume in PipePipe Diameter Calculators
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 26 monthsEvery 20 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.615.6 — better
Further details — not scored
Size11 MB59 MB
Age rating4+4+
DeveloperKelly GayneauxAshvin Kevadiya

In-app purchases

None

Volume in Pipe

No in-app purchases

1 purchases

Pipe Diameter Calculators

One-time1
  • Lifetime$9.99

Questions

Is Volume in Pipe free?
Volume in Pipe is free to download, with no in-app purchases.
Is Pipe Diameter Calculators free?
Pipe Diameter Calculators is free to download, with in-app purchases available.
Do Volume in Pipe or Pipe Diameter Calculators have ads?
Neither Volume in Pipe nor Pipe Diameter Calculators shows ads.
Which is updated more often, Volume in Pipe or Pipe Diameter Calculators?
Volume in Pipe ships an update every 26 months, and Pipe Diameter Calculators every 20 months. Most recently, Volume in Pipe was updated on November 3, 2026 and Pipe Diameter Calculators on November 8, 2026.

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