Comparison

素伊OM 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

素伊OM

Features
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企业数字化运营管理系统(O&M),是以人、事、物为管理对象,以人力资源管理为基础、以目标绩效管理为核心,助力企业实现信息化、数字化转型,提升企业运营的效率和效果。

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

素伊OM4 screens
Pipe Diameter Calculators4 screens

Verdict

The call

The clearest difference is in-app purchases: 素伊OM at none against Pipe Diameter Calculators's 1. 素伊OM also leads on update cadence (every 6 weeks vs every 20 months). Pipe Diameter Calculators's advantage is ads (none vs shown). On price, device support 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. 素伊OM asks for nothing beyond the download.

UpkeepUpdate frequency

素伊OM ships an update every 6 weeks, Pipe Diameter Calculators every 20 months. Both last shipped on November 3, 2026.

Scorecard3 real differences · 3 level
素伊OM versus Pipe Diameter Calculators: the parameters behind the verdict, then further details
Parameter素伊OMPipe Diameter Calculators
PriceFreeFree
Update frequencyEvery 6 weeks — betterEvery 20 months
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size63 MB59 MB
Age rating17+4+
Developer温州合蚨信息科技有限公司Ashvin Kevadiya

In-app purchases

None

素伊OM

No in-app purchases

1 purchases

Pipe Diameter Calculators

One-time1
  • Lifetime$9.99

Questions

Is 素伊OM free?
素伊OM 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 素伊OM or Pipe Diameter Calculators have ads?
素伊OM shows ads; Pipe Diameter Calculators does not.
Which is updated more often, 素伊OM or Pipe Diameter Calculators?
素伊OM ships an update every 6 weeks, and Pipe Diameter Calculators every 20 months. Most recently, 素伊OM was updated on November 3, 2026 and Pipe Diameter Calculators on November 3, 2026.

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