Comparison

HVAC ToolKit 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

HVAC ToolKit

This application provides HVAC engineers with tools for design checks and quick calculations. It offers various calculators for ducting friction, pipe sizing, ventilation, and heat load estimations, with clear instructions and formulas. Users can switch between metric and imperial units, and English or Arabic languages.

Highlights
  • Friction loss calculations
  • Pipe sizing tools
  • Ventilation and pressurization calculators
  • Heat load and pump head estimations
  • Metric/Imperial unit support
  • English/Arabic language options
Features
Read full description

The HVAC ToolKit is an easy-to-use app that has been created to assist HVAC engineers in checking their designs and making quick calculations and estimations. The app includes helpful calculation tools for calculating friction losses in ducting, pipe sizing, parking ventilation, staircase pressurization, and estimating heat loads, pump head, fan ESP, among others, where the user is able to enter the required inputs and is given the calculated output. Each tool also includes instructions and abbreviated formulas that have been used to calculate the results. The app can be set to metric or imperial units and/or to the English or Arabic language. Users are expected to have some knowledge and understanding of HVAC engineering in order to use the tools properly. Users are also expected to check that the results are within an acceptable range for their respective projects. If you come across any inconsistencies while using the app or have any recommendations for additional inclusions, please contact us.

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

HVAC ToolKit3 screens
Pipe Diameter Calculators4 screens

Verdict

The call

The clearest difference is price: Pipe Diameter Calculators at Free against HVAC ToolKit's $9.99. HVAC ToolKit's advantage is in-app purchases (none vs 1) and update cadence (every 3 months vs every 20 months). On ads 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

Pipe Diameter Calculators is free to download; HVAC ToolKit costs $9.99 up front. Pipe Diameter Calculators sells 1 one-off in-app purchase. HVAC ToolKit asks for nothing beyond the download.

UpkeepUpdate frequency

HVAC ToolKit ships an update every 3 months, Pipe Diameter Calculators every 20 months. Both last shipped on November 3, 2026.

Scorecard4 real differences · 5 level
HVAC ToolKit versus Pipe Diameter Calculators: the parameters behind the verdict, then further details
ParameterHVAC ToolKitPipe Diameter Calculators
Price$9.99Free — better
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 months — betterEvery 20 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size60 MB59 MB
Age rating4+4+
DeveloperMohamad JaberAshvin Kevadiya

In-app purchases

None

HVAC ToolKit

No in-app purchases

1 purchases

Pipe Diameter Calculators

One-time1
  • Lifetime$9.99

Questions

Is HVAC ToolKit free?
HVAC ToolKit costs $9.99, with no in-app purchases.
Is Pipe Diameter Calculators free?
Pipe Diameter Calculators is free to download, with in-app purchases available.
Do HVAC ToolKit or Pipe Diameter Calculators have ads?
Neither HVAC ToolKit nor Pipe Diameter Calculators shows ads.
Which is updated more often, HVAC ToolKit or Pipe Diameter Calculators?
HVAC ToolKit ships an update every 3 months, and Pipe Diameter Calculators every 20 months. Most recently, HVAC ToolKit was updated on November 3, 2026 and Pipe Diameter Calculators on November 3, 2026.

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