# Pypley vs Engineering Machine Calculator

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.

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.

## The numbers

| Metric | Pypley | Engineering Machine Calculator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/pypley/id1540444278/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | — |
| Monetization | Paid | **Ad-supported** |
| Size | 4 MB | 6 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ali Mohammed](https://appshunter.io/developer/1540444280) | [Mohammed Waqas Zaman](https://appshunter.io/developer/1640772229) |

## What reviewers say

### Pypley

[App page](https://appshunter.io/ios/app/pypley/id1540444278)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Engineering Machine Calculator

[App page](https://appshunter.io/ios/app/engineering-machine-calculator/id1640772227)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*