# Electrical Motor vs Process Engineer Calc

The clearest difference is price: Process Engineer Calc at Free against Electrical Motor's $3.99. Process Engineer Calc also leads on update cadence (every 10 days vs every 46 months). Electrical Motor's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.0). On ads and in-app purchases there is nothing between them.

Process Engineer Calc is free to download; Electrical Motor costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electrical Motor ships an update every 46 months, Process Engineer Calc every 10 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Electrical Motor | Process Engineer Calc |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/electrical-motor-calculator/id1450628327/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 46 months | **Every 10 days** |
| Monetization | Paid | — |
| Size | 9 MB | 11 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Gorasiya Vishal Nanjibhai](https://appshunter.io/developer/1287086933) | [冯泰 蔡](https://appshunter.io/developer/1896641064) |

## What reviewers say

### Electrical Motor

[App page](https://appshunter.io/ios/app/electrical-motor-calculator/id1450628327)

This app helps electricians and technicians learn about electric motor rewinding, wiring, and repair. It includes various wiring diagrams and a calculator for motor specifications like speed, horsepower, and frequency.

**Highlights:** Electric motor rewinding guide, Wiring diagrams for three-phase motors, Motor speed calculator, Horsepower calculator, Frequency and pole number calculator, Unit conversion (Watts/Volts/Amps)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Process Engineer Calc

[App page](https://appshunter.io/ios/app/process-engineer-calc-lms/id6774295442)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Electrical Motor free?

Electrical Motor costs $3.99, with no in-app purchases.

### Is Process Engineer Calc free?

Process Engineer Calc is free to download, with no in-app purchases.

### Do Electrical Motor or Process Engineer Calc have ads?

Neither Electrical Motor nor Process Engineer Calc shows ads.

### Which is updated more often, Electrical Motor or Process Engineer Calc?

Electrical Motor ships an update every 46 months, and Process Engineer Calc every 10 days. Most recently, Electrical Motor was updated on October 26, 2026 and Process Engineer Calc on October 25, 2026.

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