# Engine Calculator Plus vs Electrical Motor Calculator

The clearest difference is rating: Engine Calculator Plus at 4.0 against Electrical Motor Calculator's 3.8. Electrical Motor Calculator's advantage is ratings volume (8 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Engine Calculator Plus costs $2.99 and Electrical Motor Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Engine Calculator Plus holds the better App Store score, 4.0 against 3.8. That said, the two scores are not equally well evidenced: Electrical Motor Calculator has 8 ratings behind it against 1, so its average is the more settled of the two.

Engine Calculator Plus ships an update every 48 months, Electrical Motor Calculator every 43 months. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Engine Calculator Plus | Electrical Motor Calculator |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/engine-calculator-plus/id1355990764/reviews)** | [3.8 (8 ratings)](https://appshunter.io/ios/app/electrical-motor-calculator/id1635906150/reviews) |
| Number of ratings | 1 | **8** |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 43 months** |
| Monetization | Paid | Paid |
| Best chart rank | #183 | **#174** |
| Size | 2 MB | 1 MB |
| Requires iOS | 13 | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### Engine Calculator Plus

[App page](https://appshunter.io/ios/app/engine-calculator-plus/id1355990764)

**Currently charting:** #183 Top Paid · Productivity (US App Store)

Calculate engine specifications for various car and plane engines, including displacement, compression ratio, and horsepower. Supports metric and imperial systems with a user-friendly interface and 3D engine visualization.

**Highlights:** Engine displacement calculation, Compression ratio calculation, Horsepower estimation, Metric and Imperial support, 3D engine display, Copyable results

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

**In-app purchases:** none


### Electrical Motor Calculator

[App page](https://appshunter.io/ios/app/electrical-motor-calculator/id1635906150)

**Currently charting:** #174 Top Paid · Productivity (US App Store)

This engineering tool calculates key electrical motor characteristics like amps, horsepower, and kVa. Input system voltage, motor efficiency, and power factor to determine electrical values for your system.

**Highlights:** Calculate amps, horsepower, and kVa, Input system voltage and motor efficiency, Converts kilowatts to horsepower, Defines Power Factor (PF) and Full Load Amps (FLA), Calculates Running Load Amps (RLA)

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

**In-app purchases:** none


## Frequently asked questions

### Is Engine Calculator Plus free?

Engine Calculator Plus costs $2.99, with no in-app purchases.

### Is Electrical Motor Calculator free?

Electrical Motor Calculator costs $2.99, with no in-app purchases.

### Which has better reviews, Engine Calculator Plus or Electrical Motor Calculator?

Engine Calculator Plus is rated higher. Engine Calculator Plus averages 4.0 out of 5 from 1 ratings, while Electrical Motor Calculator averages 3.8 from 8 ratings.

### Do Engine Calculator Plus or Electrical Motor Calculator have ads?

Neither Engine Calculator Plus nor Electrical Motor Calculator shows ads.

### Which is updated more often, Engine Calculator Plus or Electrical Motor Calculator?

Engine Calculator Plus ships an update every 48 months, and Electrical Motor Calculator every 43 months. Most recently, Engine Calculator Plus was updated on September 10, 2026 and Electrical Motor Calculator on September 21, 2026.

### Which is more popular, Engine Calculator Plus or Electrical Motor Calculator?

Engine Calculator Plus currently peaks at #183 in the App Store charts, and Electrical Motor Calculator at #174. Chart position reflects recent download velocity rather than total install base.

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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.*