Comparison

Pypley vs Engineering Machine Calculator

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

Head to head
About

Pypley

This app calculates flow rate, pressure drop, and pump performance for circular pipe systems. It supports custom pumps and fittings, and allows for unit conversions between Metric and US Imperial. Ideal for hydraulic and process engineers for early-stage design and quick estimations.

Highlights
  • Flow rate and pressure drop calculation
  • Customizable pump and fitting database
  • Metric/Imperial unit conversion
  • Pump performance curve plotting
  • Cavitation risk assessment (NPSH)
  • Reynolds number and friction factor calculation
Features
Read full description

Pypley calculates flow rate, pressure drop, and pump performance for circular pipe systems with Newtonian liquids. Build serial pipe systems using a pump database, fittings, and valves, with support for custom pumps and fittings stored via iCloud. Designed for hydraulic and process engineers, Pypley supports early-stage design and quick estimations. Key Features: * Converts all project parameters between Metric and US Imperial units. * Calculates flow rate, pipe velocity, and pressure drop in pipes. * Generates pressure loss tables for fittings and pipes in the system. * Includes native and customizable pump database. * Adjusts pump performance via speed (RPM) and impeller diameter. * Plots pump and system performance curves. * Computes K values for fittings using 3K and 2K methods. * Determines Reynolds number for each pipe diameter. * Calculates pipe friction factor using the Colebrook equation. * Reports pump discharge pressure and pressure at each pipe’s start. * Evaluates NPSHr and NPSHa to assess pump cavitation risk. * Supports custom fitting lists with Kv/Cv coefficients or pressure/flow data. * Detects negative pressure in pipelines. * Identifies when centrifugal pumps reach maximum flow capacity. * Organises projects chronologically, with newest first. * Provides an expanded pipe material library with enhanced data. Pypley is a design tool for hydraulic and process applications, ideal for initial designs or rapid calculations. Note: Pypley does not support parallel or network flow analysis. Disclaimer: While we strive for accuracy and will address any issues, the developer is not liable for errors or omissions in Pypley’s calculations.

About

Engineering Machine Calculator

This app provides offline calculations for milling and turning operations. It helps users determine parameters like cutting speed, spindle speed, and metal removal rate. All calculations are saved for easy access in the history tab.

Highlights
  • Offline milling and turning calculations
  • Cutting speed calculation
  • Spindle speed calculation
  • Metal removal rate calculation
  • Power requirement calculation
  • Saved calculation history
Features
Read full description

Download the Engineering Machining Calculator to accurately calculate milling and turning operations anywhere and at anytime, offline. Each calculation is saved in the 'History' tab where by the user can easily go back to. The following parameters can be calculated on this app : - Cutting Speed - Spindle Speed - Metal Removal Rate - Power Requirement - Time in Cut - Table Feed - Torque + Many more!

Screenshots

Pypley4 screens
Engineering Machine Calculator4 screens

Verdict

The call

The clearest difference is price: Engineering Machine Calculator at Free against Pypley's $2.99. Engineering Machine Calculator also leads on review sentiment (100% vs 83%). Pypley's advantage is ads (none vs shown). On in-app purchases, 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

Engineering Machine Calculator is free to download; Pypley costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard4 real differences · 6 level
Pypley versus Engineering Machine Calculator: the parameters behind the verdict, then further details
ParameterPypleyEngineering Machine Calculator
Price$2.99Free — better
Rating1.0 (1 ratings) — better—
Positive reviews83.3% of reviews100.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 3 weeks—
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size4 MB6 MB
Age rating4+4+
DeveloperAli MohammedMohammed Waqas Zaman

Customer experience

Pypley

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Engineering Machine Calculator

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Pypley

No in-app purchases

None

Engineering Machine Calculator

No in-app purchases

Questions

Is Pypley free?
Pypley costs $2.99, with no in-app purchases.
Is Engineering Machine Calculator free?
Engineering Machine Calculator is free to download, with no in-app purchases.
Do Pypley or Engineering Machine Calculator have ads?
Engineering Machine Calculator shows ads; Pypley does not.

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